WorksheetsGrade 8 - First Term Final Revision 2025
Total questions: 239
Worksheet time: 1hrs 20mins
Name
Class
Date
1.
Everything that has mass and volume.
a)
Isolated system
b)
Magma
c)
Matter
d)
Plasma State
2.
A state of matter that has a definite shape and fixed volume.
a)
Isolated system
b)
Enzymes
c)
Matter
d)
Solid
3.
A state of matter that has the ability to spread and be compressed.
a)
Thermal Energy
b)
Benedict’s solution
c)
Pressure cooker
d)
Gas State
4.
The state of matter that has a fixed volume and varies in shape with the container that contains it.
a)
Liquid State
b)
Polysaccharides
c)
Particles model theory
d)
Solid
5.
A theory that explains the behavior and properties of matter.
a)
Nutritional chemistry
b)
System
c)
Brownian motion
d)
Particles model theory
6.
The movement of particles of matter in fluids is random in all directions.
a)
Volcano (vent)
b)
Brownian motion
c)
Benedict’s solution
d)
Catabolism
7.
A state of matter that occurs when gases are ionized into positively and negatively charged ions.
a)
Magma
b)
Plasma State
c)
System
d)
Particles model theory
8.
The change of matter from the solid state to the gaseous state directly.
a)
Sublimation process
b)
Earthquakes
c)
Temperature
d)
Gas State
9.
The change of matter from the gaseous state to the solid state directly.
a)
Gas State
b)
Amino Acids
c)
Thermal Energy
d)
Deposition process
10.
The movement of particles of matter in fluids is random in all directions.
a)
Nutritional chemistry
b)
Brownian motion
c)
Isolated system
d)
Matter
11.
Coffee dissolves in water faster than regular coffee.
a)
Deposition process
b)
Sublimation process
c)
Instant coffee
d)
Thermal Energy
12.
A pot cooks food faster because it traps steam inside.
a)
Earthquakes
b)
Pressure cooker
c)
Temperature
d)
Isolated system
13.
The temperature at which matter changes from a solid to a liquid state.
a)
Instant coffee
b)
Cholestrol
c)
Melting point
d)
Benedict’s solution
14.
A system in which there is no exchange of energy and matter with the surrounding medium.
a)
Cholestrol
b)
Isolated system
c)
Melting point
d)
Transform boundries
15.
A form of energy transfers from the hotter object to the cooler object.
a)
Melting point
b)
Continental plates
c)
Monosaccharide
d)
Thermal Energy
16.
Any part of the universe that is subject to study and observation of changes in energy and matter.
a)
Pressure cooker
b)
Isolated system
c)
Continental plates
d)
System
17.
It is considered a measure of the average kinetic energy of the particles in the system.
a)
Temperature
b)
Brownian motion
c)
Enzymes
d)
Earthquakes
18.
One of the branches of chemistry concerned with studying types of food materials.
a)
Deposition process
b)
Nutritional chemistry
c)
Thermal Energy
d)
Polysaccharides
19.
The simplest form of carbohydrates that cannot be hydrolyzed.
a)
Monosaccharide
b)
Instant coffee
c)
Gas exchange
d)
Cholestrol
20.
A fatty substance whose deposition leads to heart risks.
a)
Polysaccharides
b)
Pressure cooker
c)
Cholestrol
d)
Temperature
21.
Sugars composed of 2 to 10 units of monosaccharaides.
a)
Instant coffee
b)
Gas State
c)
Tectonic plates
d)
Oligosaccharides
22.
Sugars composed of more than 10 units of monosaccharaides.
a)
Polysaccharides
b)
Solid
c)
System
d)
Isolated system
23.
A substance made of fat whose deposition inside arteries causes blockages and leads to heart diseases.
a)
Monosaccharide
b)
Cholestrol
c)
Volcano (vent)
d)
Oligosaccharides
24.
Proteins that can be used as catalysts.
a)
Tectonic plates
b)
Enzymes
c)
Polysaccharides
d)
Glycogen
25.
Basic units that compose proteins.
a)
Deposition process
b)
Amino Acids
c)
Brownian motion
d)
Enzymes
26.
A substance in which excess carbohydrates are stored.
a)
Glycogen
b)
Oligosaccharides
c)
Gas State
d)
Cholestrol
27.
A substance used to detect glucose sugar.
a)
Continental Drift Hypothesis
b)
Gas State
c)
Benedict’s solution
d)
Matter
28.
A vital process in which carbon dioxide and oxygen are exchanged with the surrounding environment.
a)
Glycogen
b)
Gas exchange
c)
Catabolism
d)
Oligosaccharides
29.
Specialized organelles that resemble beans and are found in most living cells.
a)
Mitochondria
b)
Continental plates
c)
Monosaccharide
d)
Transform boundries
30.
The process of converting glycogen molecules into glucose molecules.
a)
Plasma State
b)
Catabolism
c)
Tectonic plates
d)
Earthquakes
31.
A theory presented by the German scientist Wegener.
a)
Isolated system
b)
Pressure cooker
c)
Enzymes
d)
Continental Drift Hypothesis
32.
The Earth’s crust, in addition to the solid part of the upper mantle.
a)
Catabolism
b)
Deposition process
c)
Liquid State
d)
Lithosphere
33.
The oceanic crust and the continental crust, which consist of solid plates of different shapes and sizes.
a)
Matter
b)
Temperature
c)
Gas exchange
d)
Tectonic plates
34.
Plates composed of thin oceanic crust with high density and part of the upper mantle.
a)
Oceanic plates
b)
Continental plates
c)
Enzymes
d)
Plasma State
35.
Plates composed of thick crust and part of the upper mantle.
a)
Amino Acids
b)
Continental plates
c)
Melting point
d)
Brownian motion
36.
A layer of molten rocks.
a)
Magma
b)
Transform boundries
c)
Divrgent boundries
d)
Isolated system
37.
The regions where tectonic plates diverge.
a)
Temperature
b)
System
c)
Instant coffee
d)
Divrgent boundries
38.
The regions where tectonic plates move in a parallel manner.
a)
Continental Drift Hypothesis
b)
Benedict’s solution
c)
Transform boundries
d)
Enzymes
39.
Rapid successive, Natural tremors occurring in the Earth’s crust
a)
Gas exchange
b)
Earthquakes
c)
Brownian motion
d)
Brownian motion
40.
An opening in the Earth’s crust that allows molten rocks and trapped gases to escape to the Earth’s surface.
a)
Sublimation process
b)
Volcano (vent)
c)
Melting point
d)
Nutritional chemistry
41.
Correct the underlined word(s) in the statement: Regular coffee dissolves in water more than instant coffee.
a)
Transform
b)
lack of agricultural land
c)
less than
d)
thylakoids
42.
Correct the underlined word(s) in the statement: Deposition process is changing of matter from the solid state to gas state without passing the liquid state.
a)
Sublimation process
b)
starch
c)
photosynthesis
d)
Glucose sugar
43.
Correct the underlined word(s) in the statement: Fats and proteins are composed of the same chemical substances.
a)
Glucose/Fructose
b)
Carbohydrates
c)
Sudan IV
d)
less than
44.
Correct the underlined word(s) in the statement: Starch is detected using Benedict’s blue solution.
a)
proteins
b)
Glucose
c)
less than
d)
lack of agricultural land
45.
Correct the underlined word(s) in the statement: Carbohydrates are composed of basic units called amino acids.
a)
Proteins
b)
Sublimation process
c)
violet
d)
dark blue
46.
Correct the underlined word(s) in the statement: Carbohydrates provide the body with more the energy that fats do.
a)
three
b)
Sublimation process
c)
Sudan IV
d)
less
47.
Correct the underlined word(s) in the statement: Sucrose sugar is a monosaccharide.
a)
Sublimation process
b)
Glucose/Fructose
c)
photosynthesis
d)
starch
48.
Correct the underlined word(s) in the statement: Benedict’s blue solution is used to detect fats.
a)
thylakoids
b)
Sudan IV
c)
lack of agricultural land
d)
violet
49.
Correct the underlined word(s) in the statement: Proteins accumulate in the blood as a result of a lack of insulin secretion.
a)
Sublimation process
b)
Biuret Solution
c)
photosynthesis
d)
Glucose sugar
50.
Correct the underlined word(s) in the statement: Yogurt and eggs are sources of carbohydrates.
a)
proteins
b)
Proteins
c)
less
d)
less than
51.
Correct the underlined word(s) in the statement: Sudan IV solution is used on the surfaces of mixtures that contain proteins.
a)
Sublimation process
b)
Chloroplast
c)
proteins
d)
Biuret Solution
52.
Correct the underlined word(s) in the statement: Biuret solution changes color from blue to green when proteins are added.
a)
Glucose
b)
violet
c)
Biuret Solution
d)
Transform
53.
Correct the underlined word(s) in the statement: Glucose is stored in plants in the form of protein.
a)
Sublimation process
b)
starch
c)
Chloroplast
d)
Biuret Solution
54.
Correct the underlined word(s) in the statement: Vertical farming helps us solve the problem of flooding.
a)
Chloroplast
b)
lack of agricultural land
c)
less
d)
proteins
55.
Correct the underlined word(s) in the statement: Photosynthesis takes place in the mitochondria found in the green parts of plants.
a)
starch
b)
Glucose sugar
c)
Carbohydrates
d)
Chloroplast
56.
Correct the underlined word(s) in the statement: Light dependent reactions occur within the stroma found in green plastids.
a)
thylakoids
b)
Sublimation process
c)
Transform
d)
proteins
57.
Correct the underlined word(s) in the statement: The process of converting light energy into chemical energy within plants is known as combustion.
a)
photosynthesis
b)
Carbohydrates
c)
violet
d)
thylakoids
58.
Correct the underlined word(s) in the statement: When iodine solution is added to a green plant leaf containing starch, it turns red.
a)
three
b)
dark blue
c)
Sudan IV
d)
Glucose
59.
Correct the underlined word(s) in the statement: There are five types of plate tectonic movement.
a)
Proteins
b)
three
c)
Glucose
d)
violet
60.
Correct the underlined word(s) in the statement: Convergent movement results in the formation of faults.
a)
dark blue
b)
Carbohydrates
c)
less
d)
Transform
61.
Choose the scientifically correct statement:
a)
Magma rich in silica forms, upon solidification, minerals such as mica and quartez.
b)
The second stage of cellular respiration takes place in mitochondria.
c)
The two factors that affect the melting and boiling points of a substance are surface area and state of matter.
d)
At normal atmospheric pressure, melting point of ice = 0 °C, while boiling point of water = 100°C.
62.
Choose the scientifically correct statement:
a)
Limewater is used to detect the presence of carbon dioxide.
b)
Plants produce oxygen gas in the process of photosynthesis process.
c)
The ancient Egyptians used galena mineral as kohl due to its luster.
d)
The evaporation process is the reverse of condensation process and freezing process is the reverse of the of melting process.
63.
Choose the scientifically correct statement:
a)
Chemical reaction is breaking up the bonds in reactants and creation of new bonds in products.
b)
The ancient Egyptians used galena mineral as kohl due to its luster.
c)
As we go up, atmospheric pressure decreases and boiling point of water less than 100 °C.
d)
During melting and evaporation processes the temperature of the material remains constant.
64.
Choose the scientifically correct statement:
a)
Physical change of matter is not accompanied by the formation of new substances, whereas Chemical change produces a new substance.
b)
The greatest kinetic energy of matter particles is in the gaseous state and the least kinetic energy is in the solid state.
c)
The two factors that affect the melting and boiling points of a substance are surface area and state of matter.
d)
The evaporation process is the reverse of condensation process and freezing process is the reverse of the of melting process.
65.
Choose the scientifically correct statement:
a)
The evaporation process is the reverse of condensation process and freezing process is the reverse of the of melting process.
b)
The first stage of cellular respiration takes place in Cytoplasm.
c)
The greatest kinetic energy of matter particles is in the gaseous state and the least kinetic energy is in the solid state.
d)
Chemical reaction is breaking up the bonds in reactants and creation of new bonds in products.
66.
Choose the scientifically correct statement:
a)
Plants produce oxygen gas in the process of photosynthesis process.
b)
The substance changes from one state to another either by gaining or losing.
c)
Limewater is used to detect the presence of carbon dioxide.
d)
During melting and evaporation processes the temperature of the material remains constant.
67.
Choose the scientifically correct statement:
a)
At normal atmospheric pressure, melting point of ice = 0 °C, while boiling point of water = 100°C.
b)
Some minerals have a luster, such as galena.
c)
During melting and evaporation processes the temperature of the material remains constant.
d)
Some Minerals have a definite (fixed) colour as Sulphur colour which is yellow.
68.
Choose the scientifically correct statement:
a)
The greatest kinetic energy of matter particles is in the gaseous state and the least kinetic energy is in the solid state.
b)
Minerals are classified according to the degree of light transmission into opaque minerals such as talc, semi-transparent mineral like mica and transparent minerals such as pure quartez. • Choose from column
c)
During melting and evaporation processes the temperature of the material remains constant.
d)
The two factors that affect the melting and boiling points of a substance are surface area and state of matter.
69.
Choose the scientifically correct statement:
a)
Some Minerals have a definite (fixed) colour as Sulphur colour which is yellow.
b)
The substance changes from one state to another either by gaining or losing.
c)
Water boils at a temperature of 100°C under normal atmospheric pressure, and as atmospheric pressure increases, its boiling point becomes more than 100°C, and its freezing point becomes less than 0°C.
d)
The first stage of cellular respiration takes place in Cytoplasm.
70.
Choose the scientifically correct statement:
a)
Some Minerals have a definite (fixed) colour as Sulphur colour which is yellow.
b)
Chemical reaction is breaking up the bonds in reactants and creation of new bonds in products.
c)
The first stage of cellular respiration takes place in Cytoplasm.
d)
Mitochondria perform Cellular respiration process.
71.
Choose the scientifically correct statement:
a)
The first stage of cellular respiration takes place in Cytoplasm.
b)
The evaporation process is the reverse of condensation process and freezing process is the reverse of the of melting process.
c)
Plants produce oxygen gas in the process of photosynthesis process.
d)
Chemical reaction is breaking up the bonds in reactants and creation of new bonds in products.
72.
Choose the scientifically correct statement:
a)
Water boils at a temperature of 100°C under normal atmospheric pressure, and as atmospheric pressure increases, its boiling point becomes more than 100°C, and its freezing point becomes less than 0°C.
b)
Mitochondria perform Cellular respiration process.
c)
The second stage of cellular respiration takes place in mitochondria.
d)
Some minerals have a luster, such as galena.
73.
Choose the scientifically correct statement:
a)
During melting and evaporation processes the temperature of the material remains constant.
b)
Some minerals have a luster, such as galena.
c)
Plants produce oxygen gas in the process of photosynthesis process.
d)
The first stage of cellular respiration takes place in Cytoplasm.
74.
Choose the scientifically correct statement:
a)
Chemical reaction is breaking up the bonds in reactants and creation of new bonds in products.
b)
Water boils at a temperature of 100°C under normal atmospheric pressure, and as atmospheric pressure increases, its boiling point becomes more than 100°C, and its freezing point becomes less than 0°C.
c)
The second stage of cellular respiration takes place in mitochondria.
d)
During melting and evaporation processes the temperature of the material remains constant.
75.
Choose the scientifically correct statement:
a)
Physical change of matter is not accompanied by the formation of new substances, whereas Chemical change produces a new substance.
b)
Limewater is used to detect the presence of carbon dioxide.
c)
Some minerals have a luster, such as galena.
d)
The second stage of cellular respiration takes place in mitochondria.
76.
Choose the scientifically correct statement:
a)
Magma rich in silica forms, upon solidification, minerals such as mica and quartez.
b)
The first stage of cellular respiration takes place in Cytoplasm.
c)
Minerals are classified according to the degree of light transmission into opaque minerals such as talc, semi-transparent mineral like mica and transparent minerals such as pure quartez. • Choose from column
d)
Chemical reaction is breaking up the bonds in reactants and creation of new bonds in products.
77.
Choose the scientifically correct statement:
a)
The two factors that affect the melting and boiling points of a substance are surface area and state of matter.
b)
Some Minerals have a definite (fixed) colour as Sulphur colour which is yellow.
c)
Mitochondria perform Cellular respiration process.
d)
Minerals are classified according to the degree of light transmission into opaque minerals such as talc, semi-transparent mineral like mica and transparent minerals such as pure quartez. • Choose from column
78.
Choose the scientifically correct statement:
a)
Some minerals have a luster, such as galena.
b)
Plants produce oxygen gas in the process of photosynthesis process.
c)
Minerals are classified according to the degree of light transmission into opaque minerals such as talc, semi-transparent mineral like mica and transparent minerals such as pure quartez. • Choose from column
d)
The two factors that affect the melting and boiling points of a substance are surface area and state of matter.
79.
Choose the scientifically correct statement:
a)
The substance changes from one state to another either by gaining or losing.
b)
Water boils at a temperature of 100°C under normal atmospheric pressure, and as atmospheric pressure increases, its boiling point becomes more than 100°C, and its freezing point becomes less than 0°C.
c)
During melting and evaporation processes the temperature of the material remains constant.
d)
The ancient Egyptians used galena mineral as kohl due to its luster.
80.
Choose the scientifically correct statement:
a)
Some minerals have a luster, such as galena.
b)
The first stage of cellular respiration takes place in Cytoplasm.
c)
Minerals are classified according to the degree of light transmission into opaque minerals such as talc, semi-transparent mineral like mica and transparent minerals such as pure quartez. • Choose from column
d)
The evaporation process is the reverse of condensation process and freezing process is the reverse of the of melting process.
81.
The suitable formula (chemical symbol) for Silver nitrate is:
a)
HCl
b)
CuSO₄
c)
AgNO₃
d)
ZnSO₄
82.
The suitable formula (chemical symbol) for Silver Chloride is:
a)
HCl
b)
AgCl
c)
ZnSO₄
d)
NaCl
83.
The suitable formula (chemical symbol) for Sodium Chloride is:
a)
AgNO₃
b)
AgCl
c)
NaCl
d)
CuSO₄
84.
The suitable formula (chemical symbol) for Copper Sulphate is:
a)
HCl
b)
ZnSO₄
c)
NaCl
d)
CuSO₄
85.
The suitable formula (chemical symbol) for Zinc Sulphate is:
a)
CuSO₄
b)
AgNO₃
c)
AgCl
d)
ZnSO₄
86.
The suitable formula (chemical symbol) for Hydrochloric acid is:
a)
HCl
b)
CuSO₄
c)
NaCl
d)
AgNO₃
87.
Solid matter has a fixed shape and a definite volume because _____.
a)
mitochondria produce ATP during cellular respiration process.
b)
copper is a good conductor of heat.
c)
particles in solids are tightly packed and vibrate in fixed positions.
d)
sweat does not evaporate easily in humid air.
88.
Gaseous matter has no fixed shape and no definite volume because _____.
a)
tectonic plate movement causes faults.
b)
folds increase surface area for energy production.
c)
liquid particles can slide past one another.
d)
gas particles are far apart and move freely in all directions.
89.
Liquid matter is flowable because _____.
a)
carbohydrates are the main source of energy.
b)
ice has a lower specific heat capacity than water.
c)
tectonic plate movement causes faults.
d)
liquid particles can slide past one another.
90.
Gases are compressible because _____.
a)
gas particles are far apart and move freely in all directions.
b)
tsunamis are generated by undersea earthquakes.
c)
there are large spaces between gas particles.
d)
liquid particles can slide past one another.
91.
Particles of matter spread faster in gases than in liquids because _____.
a)
higher temperature increases evaporation in summer.
b)
gas particles have higher kinetic energy than liquid particles.
c)
plasma (ionized gas) is used in some air-purifying and cooling technologies.
d)
proteins are needed for growth and repair of tissues.
92.
Plasma is used in air conditioners because _____.
a)
plasma (ionized gas) is used in some air-purifying and cooling technologies.
b)
higher temperature increases the rate of evaporation.
c)
copper is a good conductor of heat.
d)
tectonic plate movement causes faults.
93.
It is difficult to break a piece of rock because _____.
a)
photosynthesis builds glucose, while respiration breaks it down.
b)
smoke particles diffuse in air due to random motion of air particles.
c)
mitochondria produce ATP during cellular respiration process.
d)
particles in rocks are strongly bonded together.
94.
The possibility of dissolving a quantity of table salt in water because _____.
a)
liquid particles can slide past one another.
b)
atmospheric pressure decreases with altitude.
c)
there are spaces between water particles that allow salt particles to fit in and spread among them.
d)
particles in rocks are strongly bonded together.
95.
Spreading of smoke produces from a candle wick in the air because _____.
a)
particles in solids are tightly packed and vibrate in fixed positions.
b)
smoke particles diffuse in air due to random motion of air particles.
c)
there are large spaces between gas particles.
d)
there are spaces between water particles that allow salt particles to fit in and spread among them.
96.
Feeling uncomfortable in hot, humid weather because _____.
a)
smoke particles diffuse in air due to random motion of air particles.
b)
sweat does not evaporate easily in humid air.
c)
plasma (ionized gas) is used in some air-purifying and cooling technologies.
d)
higher temperature increases the rate of evaporation.
97.
Wet clothes dry faster on sunny days than on humid days because _____.
a)
a massive meteorite impact caused climate changes, blocking sunlight and leading to the death of plants, animals and dinosaurs. • What happens if
b)
smoke particles diffuse in air due to random motion of air particles.
c)
there are spaces between water particles that allow salt particles to fit in and spread among them.
d)
humidity slows down evaporation.
98.
The pressure cooker saves fuel because _____.
a)
increased pressure of water vapor raises the boiling point, cooking food faster.
b)
mercury has a low specific heat capacity, so it responds quickly to small changes in temperature.
c)
higher temperature increases evaporation in summer.
d)
atmospheric pressure decreases with altitude.
99.
The boiling point of water decreases with increasing altitude above sea level because _____.
a)
gas particles have higher kinetic energy than liquid particles.
b)
mitochondria produce ATP during cellular respiration process.
c)
atmospheric pressure decreases with altitude.
d)
tectonic plate movement causes faults.
100.
Water evaporates faster from the pot when the stove temperature is raised because _____.
a)
the light-independent stage uses carbon dioxide to form carbohydrates in stroma.
b)
higher temperature increases the rate of evaporation.
c)
mitochondria produce ATP during cellular respiration process.
d)
ice has a lower specific heat capacity than water.
101.
Clothes dry faster in summer than in winter because _____.
a)
copper is a good conductor of heat.
b)
higher temperature increases evaporation in summer.
c)
tsunamis are generated by undersea earthquakes.
d)
tectonic plate movement causes faults.
102.
Wet clothes dry faster when exposed to air currents because _____.
a)
tectonic plate movement causes faults.
b)
particles in solids are tightly packed and vibrate in fixed positions.
c)
smoke particles diffuse in air due to random motion of air particles.
d)
air currents remove water vapour, increasing evaporation.
103.
Mercury is used in the manufacture of thermometer because _____.
a)
liquid particles can slide past one another.
b)
mercury has a low specific heat capacity, so it responds quickly to small changes in temperature.
c)
photosynthesis builds glucose, while respiration breaks it down.
d)
air currents remove water vapour, increasing evaporation.
104.
Water makes up a large proportion of the human body because _____.
a)
a massive meteorite impact caused climate changes, blocking sunlight and leading to the death of plants, animals and dinosaurs. • What happens if
b)
gas particles are far apart and move freely in all directions.
c)
mitochondria produce ATP during cellular respiration process.
d)
water is essential for metabolic processes in the body.
105.
Copper is preferred for use in the manufacture of heating utensils due to its thermal properties because _____.
a)
copper is a good conductor of heat.
b)
gas particles have higher kinetic energy than liquid particles.
c)
atmospheric pressure decreases with altitude.
d)
plasma (ionized gas) is used in some air-purifying and cooling technologies.
106.
The temperature of ice rises more than that of water when they both acquire the same amount of thermal energy and their masses are equal because _____.
a)
proteins are needed for growth and repair of tissues.
b)
atmospheric pressure decreases with altitude.
c)
ice has a lower specific heat capacity than water.
d)
photosynthesis builds glucose, while respiration breaks it down.
107.
Carbohydrates are very important for humans because _____.
a)
the body cannot properly regulate blood glucose levels.
b)
plasma (ionized gas) is used in some air-purifying and cooling technologies.
c)
carbohydrates are the main source of energy.
d)
water is essential for metabolic processes in the body.
108.
Humans are afflicted with diabetes because _____.
a)
particles in rocks are strongly bonded together.
b)
tsunamis are generated by undersea earthquakes.
c)
proteins are needed for growth and repair of tissues.
d)
the body cannot properly regulate blood glucose levels.
109.
Living organisms benefit from proteins because _____.
a)
proteins are needed for growth and repair of tissues.
b)
air currents remove water vapour, increasing evaporation.
c)
gas particles are far apart and move freely in all directions.
d)
copper is a good conductor of heat.
110.
Glucose molecules is produced during the light independent reactions because _____.
a)
mercury has a low specific heat capacity, so it responds quickly to small changes in temperature.
b)
water is essential for metabolic processes in the body.
c)
air currents remove water vapour, increasing evaporation.
d)
the light-independent stage uses carbon dioxide to form carbohydrates in stroma.
111.
Mitochondria are energy-producing powerhouses because _____.
a)
folds increase surface area for energy production.
b)
a massive meteorite impact caused climate changes, blocking sunlight and leading to the death of plants, animals and dinosaurs. • What happens if
c)
water is essential for metabolic processes in the body.
d)
mitochondria produce ATP during cellular respiration process.
112.
Photosynthesis is a building process, while cellular respiration is a breaking-down process because _____.
a)
photosynthesis builds glucose, while respiration breaks it down.
b)
proteins are needed for growth and repair of tissues.
c)
folds increase surface area for energy production.
d)
the light-independent stage uses carbon dioxide to form carbohydrates in stroma.
113.
The cristae of the mitochondria are folded (zigzagged) because _____.
a)
gas particles have higher kinetic energy than liquid particles.
b)
liquid particles can slide past one another.
c)
atmospheric pressure decreases with altitude.
d)
folds increase surface area for energy production.
114.
Occurrence of the San Andreas Fault because _____.
a)
the light-independent stage uses carbon dioxide to form carbohydrates in stroma.
b)
tsunamis are generated by undersea earthquakes.
c)
smoke particles diffuse in air due to random motion of air particles.
d)
tectonic plate movement causes faults.
115.
Tsunamis occur on coasts because _____.
a)
liquid particles can slide past one another.
b)
tsunamis are generated by undersea earthquakes.
c)
higher temperature increases evaporation in summer.
d)
ice has a lower specific heat capacity than water.
116.
Earthquakes and volcanoes cause major losses because _____.
a)
increased pressure of water vapor raises the boiling point, cooking food faster.
b)
gas particles are far apart and move freely in all directions.
c)
they cause destruction of life and property.
d)
there are spaces between water particles that allow salt particles to fit in and spread among them.
117.
The extinction of dinosaurs in ancient times before the existence of humans because _____.
a)
a massive meteorite impact caused climate changes, blocking sunlight and leading to the death of plants, animals and dinosaurs. • What happens if
b)
particles in rocks are strongly bonded together.
c)
copper is a good conductor of heat.
d)
humidity slows down evaporation.
118.
What happens if adding a silver nitrate solution to a sodium chloride solution?
a)
Sugar melts, turns black (carbon), and water vapor is released; caramelization and charring occur.
b)
Too many vitamins or minerals can accumulate in the body.
c)
Less ATP molecules are produced in the cellular respiration process.
d)
A white precipitate of silver chloride is formed.
119.
What happens if exposing a silver chloride precipitate to sunlight?
a)
The White color of silver chloride changes into violet.
b)
Excessive fat and cholesterol intake can lead to high cholesterol causing heart diseases.
c)
Enzymes leak from mitochondria; ATP production stops.
d)
Pyruvic acid molecules are broken down in the mitochondrial matrix. By the end of reaction CO2, electrons and ATP molecules are produced.
120.
What happens if placing a zinc plate in a copper sulphate solution?
a)
The White color of silver chloride changes into violet.
b)
Without light, the plant cannot make sugar, even though CO₂ is present.
c)
The blue CuSO₄ solution becomes colorless (ZnSO₄), and reddish-brown copper deposits on zinc.
d)
Sugar melts, turns black (carbon), and water vapor is released; caramelization and charring occur.
121.
What happens if placing a magnesium strip in a test tube containing dilute hydrochloric acid?
a)
Effervescence occurs as hydrogen gas is released; magnesium dissolves slowly.
b)
Soap forms and the mixture thickens; glycerol remains in solution.
c)
Bright white flame appears, magnesium oxide is formed as a white powder.
d)
The blue CuSO₄ solution becomes colorless (ZnSO₄), and reddish-brown copper deposits on zinc.
122.
What happens if lighting a magnesium ribbon in the air?
a)
Bright white flame appears, magnesium oxide is formed as a white powder.
b)
This affect negatively the cellular respiration process and less energy (ATP) are produced.
c)
Pyruvic acid molecules are broken down in the mitochondrial matrix. By the end of reaction CO2, electrons and ATP molecules are produced.
d)
Enzymes leak from mitochondria; ATP production stops.
123.
What happens if heating a spoon with sugar on a flame for a period of time?
a)
Excessive fat and cholesterol intake can lead to high cholesterol causing heart diseases.
b)
Too many vitamins or minerals can accumulate in the body.
c)
Sugar melts, turns black (carbon), and water vapor is released; caramelization and charring occur.
d)
This affect negatively the cellular respiration process and less energy (ATP) are produced.
124.
What happens if adding sodium hydroxide to cooking oil?
a)
Enzymes leak from mitochondria; ATP production stops.
b)
Soap forms and the mixture thickens; glycerol remains in solution.
c)
Pyruvic acid molecules are broken down in the mitochondrial matrix. By the end of reaction CO2, electrons and ATP molecules are produced.
d)
Excessive fat and cholesterol intake can lead to high cholesterol causing heart diseases.
125.
What happens if iodine solution is added to potatoes?
a)
The White color of silver chloride changes into violet.
b)
Dark blue color is formed, indicating the presence of starch.
c)
Too many vitamins or minerals can accumulate in the body.
d)
Effervescence occurs as hydrogen gas is released; magnesium dissolves slowly.
126.
What happens if large quantities of butter and eggs are consumed?
a)
Excessive fat and cholesterol intake can lead to high cholesterol causing heart diseases.
b)
Too many vitamins or minerals can accumulate in the body.
c)
Effervescence occurs as hydrogen gas is released; magnesium dissolves slowly.
d)
Dark blue color is formed, indicating the presence of starch.
127.
What happens if excessive intake of nutritional supplements?
a)
Too many vitamins or minerals can accumulate in the body.
b)
The Krebs cycle cannot occur because its enzymes are needed to break down pyruvate to produce CO2, electrons and ATP molecules. • What’s meant by
c)
Excessive fat and cholesterol intake can lead to high cholesterol causing heart diseases.
d)
The White color of silver chloride changes into violet.
128.
What happens if a plant is placed with a methylene blue solution under a transparent glass bell jar exposed to light?
a)
The Krebs cycle cannot occur because its enzymes are needed to break down pyruvate to produce CO2, electrons and ATP molecules. • What’s meant by
b)
Methylene blue fades as it is reduced; plant produces oxygen and glucose under light.
c)
Pyruvic acid molecules are broken down in the mitochondrial matrix. By the end of reaction CO2, electrons and ATP molecules are produced.
d)
Soap forms and the mixture thickens; glycerol remains in solution.
129.
What happens if the outer membrane of the mitochondria is ruptured?
a)
Enzymes leak from mitochondria; ATP production stops.
b)
Bright white flame appears, magnesium oxide is formed as a white powder.
c)
Methylene blue fades as it is reduced; plant produces oxygen and glucose under light.
d)
Too many vitamins or minerals can accumulate in the body.
130.
What happens if glycogen molecules stored in the digestive process are broken down?
a)
The blue CuSO₄ solution becomes colorless (ZnSO₄), and reddish-brown copper deposits on zinc.
b)
Dark blue color is formed, indicating the presence of starch.
c)
Glucose molecules are produced from glycogen hydrolysis; energy is released.
d)
Excessive fat and cholesterol intake can lead to high cholesterol causing heart diseases.
131.
What happens if placing a plant with sodium carbonate under a glass bell jar in a dark place?
a)
Bright white flame appears, magnesium oxide is formed as a white powder.
b)
Without light, the plant cannot make sugar, even though CO₂ is present.
c)
The White color of silver chloride changes into violet.
d)
The Krebs cycle cannot occur because its enzymes are needed to break down pyruvate to produce CO2, electrons and ATP molecules. • What’s meant by
132.
What happens if the reaction of pyruvic acid in the krebs cycle?
a)
Methylene blue fades as it is reduced; plant produces oxygen and glucose under light.
b)
This affect negatively the cellular respiration process and less energy (ATP) are produced.
c)
Excessive fat and cholesterol intake can lead to high cholesterol causing heart diseases.
d)
Pyruvic acid molecules are broken down in the mitochondrial matrix. By the end of reaction CO2, electrons and ATP molecules are produced.
133.
What happens if the cristae of the mitochondria become flat?
a)
Less ATP molecules are produced in the cellular respiration process.
b)
Sugar melts, turns black (carbon), and water vapor is released; caramelization and charring occur.
c)
Effervescence occurs as hydrogen gas is released; magnesium dissolves slowly.
d)
Excessive fat and cholesterol intake can lead to high cholesterol causing heart diseases.
134.
What happens if the absence of oxygen in the two stages of cellular respiration?
a)
Glucose molecules are produced from glycogen hydrolysis; energy is released.
b)
This affect negatively the cellular respiration process and less energy (ATP) are produced.
c)
The Krebs cycle cannot occur because its enzymes are needed to break down pyruvate to produce CO2, electrons and ATP molecules. • What’s meant by
d)
Dark blue color is formed, indicating the presence of starch.
135.
What happens if enzymes are removed from the mitochondrial matrix?
a)
Excessive fat and cholesterol intake can lead to high cholesterol causing heart diseases.
b)
The Krebs cycle cannot occur because its enzymes are needed to break down pyruvate to produce CO2, electrons and ATP molecules. • What’s meant by
c)
Effervescence occurs as hydrogen gas is released; magnesium dissolves slowly.
d)
Too many vitamins or minerals can accumulate in the body.
136.
What’s meant by Melting?
a)
A green pigment in chloroplasts that absorbs light energy for photosynthesis.
b)
The process by which a liquid changes into a gas at a specific temperature equals its boiling point.
c)
The process by which a solid turns into a liquid when it gains heat.
d)
The upper layer of Earth’s surface composed of minerals, organic matter (Humus) , water, and air, supporting plant life.
137.
What’s meant by Freezing?
a)
A change in the form or state of a substance without changing its chemical composition.
b)
The temperature at which a solid melts and changes into liquid.
c)
The sum of all chemical reactions in a living organism, including breaking down and building molecules.
d)
The process by which a liquid turns into a solid when it loses heat.
138.
What’s meant by Evaporation?
a)
The process by which a liquid changes into a gas at any temperature below its boiling point.
b)
Openings in Earth’s crust, often vents, through which molten rock, gas, and ash erupt.
c)
The temperature at which a liquid boils and changes into gas.
d)
A green pigment in chloroplasts that absorbs light energy for photosynthesis.
139.
What’s meant by Boiling?
a)
End product of glycolysis that is produced from glycolysis process in cytoplasm.
b)
Chloroplasts; organelles in plant cells that contain chlorophyll and carry out photosynthesis.
c)
The gradual movement of continents over Earth’s surface through geological time.
d)
The process by which a liquid changes into a gas at a specific temperature equals its boiling point.
140.
What’s meant by Boiling point?
a)
The temperature at which a liquid boils and changes into gas.
b)
Matter cannot be created or destroyed; it can only change form.
c)
The process by which green plants use sunlight, CO₂, and water to produce glucose and oxygen.
d)
The amount of heat required to raise the temperature of 1 kg of a substance by 1 °C.
141.
What’s meant by Melting point?
a)
The process by which a gas changes into a liquid due to losing heat.
b)
End product of glycolysis that is produced from glycolysis process in cytoplasm.
c)
The temperature at which a solid melts and changes into liquid.
d)
The amount of heat required to raise the temperature of 1 kg of a substance by 1 °C.
142.
What’s meant by Condensation?
a)
The process by which a gas changes into a liquid due to losing heat.
b)
The process by which a solid changes directly into a gas without passing through the liquid state.
c)
The fluid of mitochondria surround the intermembrane where the Krebs cycle occurs.
d)
The temperature at which a solid melts and changes into liquid.
143.
What’s meant by Deposition?
a)
Solid forms with a regular structure are formed by cooling a supersaturated solution.
b)
The temperature at which a solid melts and changes into liquid.
c)
The process by which a gas changes directly into a solid without becoming a liquid.
d)
End product of glycolysis that is produced from glycolysis process in cytoplasm.
144.
What’s meant by Sublimation?
a)
The gradual movement of continents over Earth’s surface through geological time.
b)
A change in the form or state of a substance without changing its chemical composition.
c)
The process by which a solid changes directly into a gas without passing through the liquid state.
d)
The process by which a solid turns into a liquid when it gains heat.
145.
What’s meant by System?
a)
Solid fragments from space that survive passage through the atmosphere and land on Earth.
b)
A part of the universe under study, separated by boundaries for observation or analysis.
c)
When tectonic plates move away from each other, forming new crust.
d)
Naturally occurring inorganic substance with a definite chemical composition and crystal structure.
146.
What’s meant by Law of conservation of mass?
a)
Mass cannot be created or destroyed in a chemical reaction; it remains constant.
b)
The amount of heat required to raise the temperature of 1 kg of a substance by 1 °C.
c)
The fluid of mitochondria surround the intermembrane where the Krebs cycle occurs.
d)
When tectonic plates move away from each other, forming new crust.
147.
What’s meant by Law of conservation of matter?
a)
The process by which a gas changes into a liquid due to losing heat.
b)
The process by which a liquid changes into a gas at any temperature below its boiling point.
c)
A change in which new substances with different properties are formed.
d)
Matter cannot be created or destroyed; it can only change form.
148.
What’s meant by Physical change?
a)
The process by which green plants use sunlight, CO₂, and water to produce glucose and oxygen.
b)
A change in the form or state of a substance without changing its chemical composition.
c)
The process by which a solid changes directly into a gas without passing through the liquid state.
d)
The sum of all chemical reactions in a living organism, including breaking down and building molecules.
149.
What’s meant by Chemical change?
a)
A change in which new substances with different properties are formed.
b)
The sum of all chemical reactions in a living organism, including breaking down and building molecules.
c)
Natural rapid successive tremors of the Earth’s surface caused by sudden movement of tectonic plates.
d)
Solid fragments from space that survive passage through the atmosphere and land on Earth.
150.
What’s meant by Chemical reaction?
a)
Solid forms with a regular structure are formed by cooling a supersaturated solution.
b)
Metabolic reactions that build complex molecules from simpler ones, requiring energy. (ATP molecules).
c)
A process in which reactants are transformed into new products with different chemical properties.
d)
The temperature at which a liquid boils and changes into gas.
151.
What’s meant by Internal energy of a system?
a)
The temperature at which a liquid boils and changes into gas.
b)
Large pieces of Earth’s lithosphere that float on the mantle and move slowly.
c)
The total energy contained within a system, including kinetic and potential energy of particles.
d)
A measure of the average kinetic energy of the particles in a system.
152.
What’s meant by Temperature of a system?
a)
A part of the universe under study, separated by boundaries for observation or analysis.
b)
The sum of all chemical reactions in a living organism, including breaking down and building molecules.
c)
Solid fragments from space that survive passage through the atmosphere and land on Earth.
d)
A measure of the average kinetic energy of the particles in a system.
153.
What’s meant by Specific heat?
a)
The amount of heat required to raise the temperature of 1 kg of a substance by 1 °C.
b)
The temperature at which a solid melts and changes into liquid.
c)
The process by which green plants use sunlight, CO₂, and water to produce glucose and oxygen.
d)
End product of glycolysis that is produced from glycolysis process in cytoplasm.
154.
What’s meant by Photosynthesis?
a)
The process by which green plants use sunlight, CO₂, and water to produce glucose and oxygen.
b)
The process by which a gas changes into a liquid due to losing heat.
c)
Large pieces of Earth’s lithosphere that float on the mantle and move slowly.
d)
The fluid-filled space inside chloroplasts where light independent reactions of photosynthesis occurs.
155.
What’s meant by Green plastids?
a)
The process by which green plants use sunlight, CO₂, and water to produce glucose and oxygen.
b)
Chloroplasts; organelles in plant cells that contain chlorophyll and carry out photosynthesis.
c)
The process by which a gas changes into a liquid due to losing heat.
d)
When tectonic plates slide past each other in a parallel direction.
156.
What’s meant by Stroma?
a)
A change in the form or state of a substance without changing its chemical composition.
b)
The fluid-filled space inside chloroplasts where light independent reactions of photosynthesis occurs.
c)
Pyruvic acid molecules are broken down in the mitochondrial matrix. By the end of reaction CO2, electrons and ATP molecules are produced.
d)
The sum of all chemical reactions in a living organism, including breaking down and building molecules.
157.
What’s meant by Grana?
a)
The process by which a liquid turns into a solid when it loses heat.
b)
Metabolic reactions that break down molecules to release energy. (ATP molecules).
c)
The fluid-filled space inside chloroplasts where light independent reactions of photosynthesis occurs.
d)
A group of thylakoid membranes inside chloroplasts where light-dependent reactions occur.
158.
What’s meant by Chlorophyll?
a)
A green pigment in chloroplasts that absorbs light energy for photosynthesis.
b)
The temperature at which a liquid boils and changes into gas.
c)
The gradual movement of continents over Earth’s surface through geological time.
d)
The total energy contained within a system, including kinetic and potential energy of particles.
159.
What’s meant by Vertical farming?
a)
A change in which new substances with different properties are formed.
b)
The process by which a liquid changes into a gas at a specific temperature equals its boiling point.
c)
Metabolic reactions that build complex molecules from simpler ones, requiring energy. (ATP molecules).
d)
The practice of growing crops in vertically stacked layers, because of lack of agricultural lands.
160.
What’s meant by Cellular respiration?
a)
The process by which cells break down glucose to produce ATP, CO₂, and water.
b)
A change in which new substances with different properties are formed.
c)
Solid fragments from space that survive passage through the atmosphere and land on Earth.
d)
The temperature at which a solid melts and changes into liquid.
161.
What’s meant by Mitochondria?
a)
Organelles in cells where cellular respiration occurs and energy (ATP) is produced.
b)
Pyruvic acid molecules are broken down in the mitochondrial matrix. By the end of reaction CO2, electrons and ATP molecules are produced.
c)
Mass cannot be created or destroyed in a chemical reaction; it remains constant.
d)
Openings in Earth’s crust, often vents, through which molten rock, gas, and ash erupt.
162.
What’s meant by Matrix?
a)
A green pigment in chloroplasts that absorbs light energy for photosynthesis.
b)
The temperature at which a solid melts and changes into liquid.
c)
Natural rapid successive tremors of the Earth’s surface caused by sudden movement of tectonic plates.
d)
The fluid of mitochondria surround the intermembrane where the Krebs cycle occurs.
163.
What’s meant by Krebs Cycle?
a)
The temperature at which a liquid boils and changes into gas.
b)
Pyruvic acid molecules are broken down in the mitochondrial matrix. By the end of reaction CO2, electrons and ATP molecules are produced.
c)
The temperature at which a solid melts and changes into liquid.
d)
The upper layer of Earth’s surface composed of minerals, organic matter (Humus) , water, and air, supporting plant life.
164.
What’s meant by Pyruvate molecules (Pyruvic acid)?
a)
End product of glycolysis that is produced from glycolysis process in cytoplasm.
b)
Matter cannot be created or destroyed; it can only change form.
c)
The temperature at which a liquid boils and changes into gas.
d)
A green pigment in chloroplasts that absorbs light energy for photosynthesis.
165.
What’s meant by Metabolism?
a)
The process by which green plants use sunlight, CO₂, and water to produce glucose and oxygen.
b)
The sum of all chemical reactions in a living organism, including breaking down and building molecules.
c)
A part of the universe under study, separated by boundaries for observation or analysis.
d)
The process by which a liquid changes into a gas at any temperature below its boiling point.
166.
What’s meant by Catabolism?
a)
A measure of the average kinetic energy of the particles in a system.
b)
Solid forms with a regular structure are formed by cooling a supersaturated solution.
c)
Metabolic reactions that break down molecules to release energy. (ATP molecules).
d)
Solid fragments from space that survive passage through the atmosphere and land on Earth.
167.
What’s meant by Anabolism?
a)
Metabolic reactions that build complex molecules from simpler ones, requiring energy. (ATP molecules).
b)
When tectonic plates move away from each other, forming new crust.
c)
A green pigment in chloroplasts that absorbs light energy for photosynthesis.
d)
Metabolic reactions that break down molecules to release energy. (ATP molecules).
168.
What’s meant by Continental drift?
a)
The gradual movement of continents over Earth’s surface through geological time.
b)
Chloroplasts; organelles in plant cells that contain chlorophyll and carry out photosynthesis.
c)
Natural rapid successive tremors of the Earth’s surface caused by sudden movement of tectonic plates.
d)
A change in which new substances with different properties are formed.
169.
What’s meant by Tectonic plates?
a)
Naturally occurring inorganic substance with a definite chemical composition and crystal structure.
b)
Matter cannot be created or destroyed; it can only change form.
c)
Mass cannot be created or destroyed in a chemical reaction; it remains constant.
d)
Large pieces of Earth’s lithosphere that float on the mantle and move slowly.
170.
What’s meant by Divergent movement?
a)
A change in the form or state of a substance without changing its chemical composition.
b)
When tectonic plates move away from each other, forming new crust.
c)
Organelles in cells where cellular respiration occurs and energy (ATP) is produced.
d)
Matter cannot be created or destroyed; it can only change form.
171.
What’s meant by Transform movement?
a)
Metabolic reactions that break down molecules to release energy. (ATP molecules).
b)
A change in the form or state of a substance without changing its chemical composition.
c)
When tectonic plates slide past each other in a parallel direction.
d)
Naturally occurring inorganic substance with a definite chemical composition and crystal structure.
172.
What’s meant by Earthquakes?
a)
Solid forms with a regular structure are formed by cooling a supersaturated solution.
b)
The amount of heat required to raise the temperature of 1 kg of a substance by 1 °C.
c)
Natural rapid successive tremors of the Earth’s surface caused by sudden movement of tectonic plates.
d)
The process by which a liquid changes into a gas at a specific temperature equals its boiling point.
173.
What’s meant by Volcanoes?
a)
Openings in Earth’s crust, often vents, through which molten rock, gas, and ash erupt.
b)
Large pieces of Earth’s lithosphere that float on the mantle and move slowly.
c)
The amount of heat required to raise the temperature of 1 kg of a substance by 1 °C.
d)
The process by which cells break down glucose to produce ATP, CO₂, and water.
174.
What’s meant by Meteorites?
a)
A part of the universe under study, separated by boundaries for observation or analysis.
b)
Openings in Earth’s crust, often vents, through which molten rock, gas, and ash erupt.
c)
Solid fragments from space that survive passage through the atmosphere and land on Earth.
d)
Natural rapid successive tremors of the Earth’s surface caused by sudden movement of tectonic plates.
175.
What’s meant by Mineral?
a)
Organelles in cells where cellular respiration occurs and energy (ATP) is produced.
b)
Naturally occurring inorganic substance with a definite chemical composition and crystal structure.
c)
End product of glycolysis that is produced from glycolysis process in cytoplasm.
d)
Metabolic reactions that break down molecules to release energy. (ATP molecules).
176.
What’s meant by Crystallization?
a)
Solid forms with a regular structure are formed by cooling a supersaturated solution.
b)
When tectonic plates slide past each other in a parallel direction.
c)
A part of the universe under study, separated by boundaries for observation or analysis.
d)
Openings in Earth’s crust, often vents, through which molten rock, gas, and ash erupt.
177.
What’s meant by Soil?
a)
The process by which a liquid changes into a gas at any temperature below its boiling point.
b)
The process by which cells break down glucose to produce ATP, CO₂, and water.
c)
The upper layer of Earth’s surface composed of minerals, organic matter (Humus) , water, and air, supporting plant life.
d)
Large pieces of Earth’s lithosphere that float on the mantle and move slowly.
178.
Choose the correct comparison topic as written in the revision sheet:
a)
Melting and freezing processes.
b)
ATP & ADP
c)
Green plastids and mitochondria.
d)
Earthquakes and Volcanoes. E) Answer the following:
179.
Choose the correct comparison topic as written in the revision sheet:
a)
Evaporation and condensation processes.
b)
The first stage of photosynthesis and cellular respiration.
c)
Glycogen and protein.
d)
Types of systems.
180.
Choose the correct comparison topic as written in the revision sheet:
a)
Evaporation and condensation processes.
b)
Catabolism and Anabolism.
c)
ATP & ADP
d)
Evaporation and boiling processes.
181.
Choose the correct comparison topic as written in the revision sheet:
a)
Magnesium burning reaction , Magnesium + HCl reaction
b)
Catabolism and Anabolism.
c)
Types of systems.
d)
Photosynthesis and cellular respiration.
182.
Choose the correct comparison topic as written in the revision sheet:
a)
Physical and Chemical changes.
b)
Melting and freezing processes.
c)
Evaporation and boiling processes.
d)
Types of systems.
183.
Choose the correct comparison topic as written in the revision sheet:
a)
Catabolism and Anabolism.
b)
Physical and Chemical changes.
c)
Magnesium burning reaction , Magnesium + HCl reaction
d)
Glycogen and protein.
184.
Choose the correct comparison topic as written in the revision sheet:
a)
The second stage of photosynthesis and cellular respiration.
b)
The first stage of photosynthesis and cellular respiration.
c)
Evaporation and boiling processes.
d)
Green plastids and mitochondria.
185.
Choose the correct comparison topic as written in the revision sheet:
a)
Photosynthesis and cellular respiration.
b)
ATP & ADP
c)
Melting and freezing processes.
d)
Green plastids and mitochondria.
186.
Choose the correct comparison topic as written in the revision sheet:
a)
The first stage of photosynthesis and cellular respiration.
b)
Green plastids and mitochondria.
c)
Catabolism and Anabolism.
d)
The reactions of the first and second stages of cellular respiration.
187.
Choose the correct comparison topic as written in the revision sheet:
a)
The second stage of photosynthesis and cellular respiration.
b)
Glycogen and protein.
c)
Catabolism and Anabolism.
d)
Physical and Chemical changes.
188.
Choose the correct comparison topic as written in the revision sheet:
a)
Physical and Chemical changes.
b)
The second stage of photosynthesis and cellular respiration.
c)
Glycogen and protein.
d)
Catabolism and Anabolism.
189.
Choose the correct comparison topic as written in the revision sheet:
a)
Evaporation and condensation processes.
b)
Glycogen and protein.
c)
The second stage of photosynthesis and cellular respiration.
d)
Photosynthesis and cellular respiration.
190.
Choose the correct comparison topic as written in the revision sheet:
a)
Green plastids and mitochondria.
b)
Evaporation and condensation processes.
c)
ATP & ADP
d)
Glycogen and protein.
191.
Choose the correct comparison topic as written in the revision sheet:
a)
The reactions of the first and second stages of cellular respiration.
b)
Evaporation and condensation processes.
c)
The second stage of photosynthesis and cellular respiration.
d)
Photosynthesis and cellular respiration.
192.
Choose the correct comparison topic as written in the revision sheet:
a)
Divergent movement, convergent movement, and transform movement.
b)
The reactions of the first and second stages of cellular respiration.
c)
Green plastids and mitochondria.
d)
The second stage of photosynthesis and cellular respiration.
193.
Choose the correct comparison topic as written in the revision sheet:
a)
Types of systems.
b)
Melting and freezing processes.
c)
Evaporation and condensation processes.
d)
Earthquakes and Volcanoes. E) Answer the following:
194.
What are the factors that determine the state of matter?
a)
Temperature and pressure.
b)
And why? No, because air is a gas and gases have no fixed shape or volume, so they escape easily.
c)
Temperature, surface area, air movement (wind), and humidity.
d)
By increasing temperature, increasing air movement, and spreading the clothes out.
195.
What are the factors that determine the speed of diffusion in fluids?
a)
Because it is a solid and solids have a fixed shape.
b)
By observing color change, gas release, temperature change, formation of a precipitate, or light emission.
c)
Mineral particles, organic matter (humus), water, and air. F) Write the chemical formula
d)
Temperature, size (mass) of particles, and density of the fluid.
196.
Can you hold air?
a)
Temperature, surface area, air movement (wind), and humidity.
b)
And why? No, because air is a gas and gases have no fixed shape or volume, so they escape easily.
c)
Temperature and pressure.
d)
Because it is a solid and solids have a fixed shape.
197.
Why does water spill out when you tilt a cup?
a)
Because it is a solid and solids have a fixed shape.
b)
Mineral particles, organic matter (humus), water, and air. F) Write the chemical formula
c)
Temperature, surface area, air movement (wind), and humidity.
d)
Because liquids have no fixed shape and take the shape of their container, so water flows out when tilted.
198.
Why doesn’t a sugar cube take the shape of the cup?
a)
Carbon dioxide (CO₂).
b)
Light intensity, carbon dioxide concentration, temperature.
c)
And why? No, because air is a gas and gases have no fixed shape or volume, so they escape easily.
d)
Because it is a solid and solids have a fixed shape.
199.
What factors impact melting and boiling points?
a)
And why? No, because air is a gas and gases have no fixed shape or volume, so they escape easily.
b)
Temperature and pressure.
c)
By increasing temperature, increasing air movement, and spreading the clothes out.
d)
Nature of the substance and atmospheric pressure.
200.
How can you speed up the process of drying wet clothes in winter?
a)
Chlorophyll.
b)
By increasing temperature, increasing air movement, and spreading the clothes out.
c)
Temperature and pressure.
d)
Temperature, surface area, air movement (wind), and humidity.
201.
What factors affect the melting and boiling points?
a)
And why? No, because air is a gas and gases have no fixed shape or volume, so they escape easily.
b)
Temperature, size (mass) of particles, and density of the fluid.
c)
Nature of the substance and pressure.
d)
Mineral particles, organic matter (humus), water, and air. F) Write the chemical formula
202.
What factors affect the evaporation process?
a)
Chlorophyll.
b)
Temperature, surface area, air movement (wind), and humidity.
c)
Because it is a solid and solids have a fixed shape.
d)
Temperature and pressure.
203.
How do we infer the occurrence of a chemical reaction?
a)
By observing color change, gas release, temperature change, formation of a precipitate, or light emission.
b)
Temperature, surface area, air movement (wind), and humidity.
c)
Temperature and pressure.
d)
By increasing temperature, increasing air movement, and spreading the clothes out.
204.
What gas do plants use to make their own food?
a)
By observing color change, gas release, temperature change, formation of a precipitate, or light emission.
b)
By increasing temperature, increasing air movement, and spreading the clothes out.
c)
Chlorophyll.
d)
Carbon dioxide (CO₂).
205.
What is the green substance in plants that absorbs light?
a)
Chlorophyll.
b)
And why? No, because air is a gas and gases have no fixed shape or volume, so they escape easily.
c)
Because it is a solid and solids have a fixed shape.
d)
Nature of the substance and pressure.
206.
Mention the stages of photosynthesis and identify where each stage takes place. Light dependent: thylakoids; Light independent: stroma.
a)
Chlorophyll.
b)
Temperature, size (mass) of particles, and density of the fluid.
c)
Light intensity, carbon dioxide concentration, temperature.
207.
What factors affect the rate of photosynthesis?
a)
Nature of the substance and pressure.
b)
Light intensity, carbon dioxide concentration, temperature.
c)
By observing color change, gas release, temperature change, formation of a precipitate, or light emission.
d)
Nature of the substance and atmospheric pressure.
208.
Write two equations (photosynthesis and cellular respiration). 6CO₂ + 6H₂O + Light -> C₆H₁₂O₆ + 6O₂ ; C₆H₁₂O₆ + 6O₂ -> 6CO₂ + 6H₂O + ATP
a)
Mineral particles, organic matter (humus), water, and air. F) Write the chemical formula
b)
And why? No, because air is a gas and gases have no fixed shape or volume, so they escape easily.
c)
Nature of the substance and pressure.
209.
What does soil consist of?
a)
Chlorophyll.
b)
Mineral particles, organic matter (humus), water, and air. F) Write the chemical formula
c)
Temperature, surface area, air movement (wind), and humidity.
d)
Temperature, size (mass) of particles, and density of the fluid.
210.
The chemical formula for Silver nitrate is:
a)
HCl
b)
MgO
c)
NaNO₃
d)
AgNO₃
211.
The chemical formula for Sodium chloride is:
a)
NaCl
b)
AgNO₃
c)
ZnSO₄
d)
HCl
212.
The chemical formula for Silver chloride is:
a)
NaNO₃
b)
CuCl₂
c)
AgCl
d)
ZnSO₄
213.
The chemical formula for Sodium nitrate is:
a)
MgO
b)
NaNO₃
c)
AgCl
d)
NaCl
214.
The chemical formula for Hydrochloric acid is:
a)
AgCl
b)
CuCl₂
c)
HCl
d)
NaNO₃
215.
The chemical formula for Copper sulphate is:
a)
CuSO₄
b)
HCl
c)
CuCl₂
d)
ZnSO₄
216.
The chemical formula for Zinc sulphate is:
a)
ZnSO₄
b)
HCl
c)
MgO
d)
AgNO₃
217.
The chemical formula for Magnesium oxide is:
a)
NaCl
b)
NaOH
c)
AgNO₃
d)
MgO
218.
The chemical formula for Copper chloride is:
a)
NaOH
b)
MgO
c)
AgNO₃
d)
CuCl₂
219.
The chemical formula for Sodium hydroxide is:
a)
CuCl₂
b)
CuSO₄
c)
MgO
d)
NaOH
220.
Mitochondrial cristae?
a)
Largest amount of ATP during cellular respiration.
b)
Produces CO2, electrons and ATP.
c)
Broken down producing CO2, electrons and ATP. H) Rewrite the following
d)
Increase the surface area for electron transport chain reactions and ATP production.
221.
The Krebs cycle?
a)
Largest amount of ATP during cellular respiration.
b)
Broken down producing CO2, electrons and ATP. H) Rewrite the following
c)
Produces CO2, electrons and ATP.
d)
Increase the surface area for electron transport chain reactions and ATP production.
222.
Electron transport chain reactions?
a)
Largest amount of ATP during cellular respiration.
b)
Produces CO2, electrons and ATP.
c)
Broken down producing CO2, electrons and ATP. H) Rewrite the following
d)
Increase the surface area for electron transport chain reactions and ATP production.
223.
Pyruvic acid in the Krebs cycle?
a)
Broken down producing CO2, electrons and ATP. H) Rewrite the following
b)
Increase the surface area for electron transport chain reactions and ATP production.
c)
Produces CO2, electrons and ATP.
d)
Largest amount of ATP during cellular respiration.
224.
Which balanced chemical equation is correct?
a)
2H₂ (g) + O₂ (g)-> 2H₂O (l)
b)
3H₂ (g) + O₂ (g)-> 2H₂O (l)
c)
Not balanced
d)
Not balanced
225.
Which balanced chemical equation is correct?
a)
3S (s) + 3O₂ (g)-> 2SO₃ (g)
b)
Not balanced
c)
Not balanced
d)
2S (s) + 3O₂ (g)-> 2SO₃ (g)
226.
Which balanced chemical equation is correct?
a)
3K (s) + Br₂ (l) -> 2KBr (s)
b)
Not balanced
c)
2K (s) + Br₂ (l) -> 2KBr (s)
d)
Not balanced
227.
Which balanced chemical equation is correct?
a)
C₆H₁₂O₆ (aq) + 6O₂ (g)-> 6CO₂ (g) + 6H₂O (l)
b)
C₆H₁₂O₆ (aq) + 7O₂ (g)-> 6CO₂ (g) + 6H₂O (l)
c)
Not balanced
d)
Not balanced
228.
Which balanced chemical equation is correct?
a)
Not balanced
b)
2H₂O (l)-> 2H₂ (g) + O₂ (g)
c)
Not balanced
d)
3H₂O (l)-> 2H₂ (g) + O₂ (g)
229.
Which balanced chemical equation is correct?
a)
Not balanced
b)
2Na (s) + Cl₂ (g)-> 2NaCl (s)
c)
3Na (s) + Cl₂ (g)-> 2NaCl (s)
d)
Not balanced
230.
Which balanced chemical equation is correct?
a)
2CaCO₃ (s)-> CaO (s) + CO₂ (g)
b)
Not balanced
c)
Not balanced
d)
CaCO₃ (s)-> CaO (s) + CO₂ (g)
231.
Which balanced chemical equation is correct?
a)
Mg (s) + 2HCl (aq)-> MgCl₂ (aq) + H₂ (g)
b)
Not balanced
c)
Not balanced
d)
Mg (s) + 3HCl (aq)-> MgCl₂ (aq) + H₂ (g)
232.
Which balanced chemical equation is correct?
a)
Not balanced
b)
2NH₃ (g) + HCl (aq)-> NH₄Cl (s)
c)
Not balanced
d)
NH₃ (g) + HCl (aq)-> NH₄Cl (s)
233.
Which balanced chemical equation is correct?
a)
2Zn (s) + CuSO₄ (aq) -> ZnSO₄ (aq) + Cu (s)
b)
Zn (s) + CuSO₄ (aq) -> ZnSO₄ (aq) + Cu (s)
c)
Not balanced
d)
Not balanced
234.
Which balanced chemical equation is correct?
a)
Not balanced
b)
Zn (s) + 2AgNO₃ (aq) -> Zn(NO₃)₂ (aq) + 2Ag (s)
c)
Not balanced
d)
Zn (s) + 3AgNO₃ (aq) -> Zn(NO₃)₂ (aq) + 2Ag (s)
235.
Which balanced chemical equation is correct?
a)
2Al (s) + 3H₂SO₄ (aq) -> Al₂(SO₄)₃ (aq) + 3H₂ (g)
b)
Not balanced
c)
Not balanced
d)
3Al (s) + 3H₂SO₄ (aq) -> Al₂(SO₄)₃ (aq) + 3H₂ (g)
236.
Which balanced chemical equation is correct?
a)
3Na (s) + 2H₂O (l) -> 2NaOH (aq) + H₂ (g)
b)
Not balanced
c)
2Na (s) + 2H₂O (l) -> 2NaOH (aq) + H₂ (g)
d)
Not balanced
237.
Which balanced chemical equation is correct?
a)
Not balanced
b)
2NaNO₃ (s) -> 2NaNO₂ (s) + O₂ (g)
c)
Not balanced
d)
3NaNO₃ (s) -> 2NaNO₂ (s) + O₂ (g)
238.
Which balanced chemical equation is correct?
a)
Not balanced
b)
4Al (s) + 3O₂ (g) -> 2Al₂O₃ (s)
c)
5Al (s) + 3O₂ (g) -> 2Al₂O₃ (s)
d)
Not balanced
239.
Which balanced chemical equation is correct?
a)
Not balanced
b)
Not balanced
c)
N₂ (g) + 3H₂ (g) -> 2NH₃ (g)
d)
N₂ (g) + 4H₂ (g) -> 2NH₃ (g)
100 %
