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WorksheetsQ1 MATTER -REVIEW
Total questions: 65
Worksheet time: 33mins
What kind of change occurs when photosynthesis happens in plants?
Physical change
Chemical change
Mechanical change
Physical change and Chemical change
A fire alarm goes off while you are conducting an experiment. What is the proper response?
Continue working until the alarm stops
Evacuate the lab calmly and follow the school's fire drill procedures
Try to put out any fires yourself
Wait for instructions from the teacher before leaving
Cierra is on a camping trip with her parents. They decide to build a campfire to cook their dinner. The burning fire is an example of a —
A. physical and exothermic change
B. physical and endothermic change
C. chemical and exothermic change
D. chemical and endothermic change
A student conducted an activity with the given experimental set up. He observed that when baking powder is mixed with vinegar, carbon dioxide gas is released in test tube A and the lime water in test tube B turns milky. Which explains the type of changes that occurred in the test tubes?
Test tube A - physical change, as temperature did not change; Test tube B - physical change, as the color of lime water changed
Test tube A - physical change, as bubbles were formed; Test tube B - chemical change, as a new substance was formed
Test tube A - chemical change, as a gas was formed; Test tube B - physical change, as the color of lime water changed
Test tube A - chemical change, as a gas was formed; Test tube B - chemical change, as a new substance was formed
Which of the following mixtures can be separated using a sieve?
Water and sugar
Salt and water
Sand and gravel
Oil and water
For separating a mixture of salt and water, what method would be most effective?
Filtration
Evaporation
Chromatography
Centrifugation
When baking a cake, what kind of change occurs?
Physical Change
Chemical Change
Reversible change
Evaporation
In cooking, when sugar is dissolved in water to make a syrup, what type of mixture is formed?
Colloid
Suspension
Homogeneous Mixture
Which of the following is a correct procedure for handling chemicals?
A. Smell the chemicals to test their properties
B. Read the label and follow the instructions carefully
C. Mix chemicals together to see what happens
D. Use any chemical without proper training
Which apparatus is used to measure the volume of a liquid accurately?
Beaker
Graduated Cylinder
Test tube
Erlenmeyer Flask
The smallest unit of an element that retains its chemical properties is:
Molecule
Atom
Ion
Compound
A fire alarm goes off while you are conducting an experiment. What is the proper response?
Continue working until the alarm stops
Evacuate the lab calmly and follow the school's fire drill procedures
Try to put out any fires yourself
Wait for instructions from the teacher before leaving
A student receives a model of an atom that contains seven protons, neutrons, and electrons, and has an atomic mass of approximately 14. What procedure can the student use to identify the atom?
The student can reference the periodic table and find the element that has an atomic number of 7, which represents the number of neutrons in the atom.
The student can reference the periodic table and find the element that has an atomic number of 14, which represents the number of protons and neutrons in the atom.
The student can reference the periodic table and find the element that has an atomic number of 14, which represents the number of electrons and neutrons in the atom.
The student can reference the periodic table and find the element that has an atomic number of 7, which represents the number of protons in the atom.
What kind of change occurs when ice cream melts on a hot day?
Chemical change
Physical Change
Oxidation
Sublimation
What is the physical state of matter with a definite volume but definite shape?
Solid
Liquid
Gas
Plasma
Why is water's ability to exist in all three states of matter important for the environment?
It allows for the formation of different types of rocks.
It enables the water cycle, which includes evaporation, condensation, and precipitation.
It helps in the formation of solid fuels.
It reduces the impact of temperature changes on plants.
At what temperature does water freeze under normal atmospheric pressure?
212 °F
32 °F
214 °F
112 °F
Which of the following is characteristic of a physical change?
The change can be observed.
Substances are changed into different substances.
The substance is destroyed in the process.
The change is not observable.
Which of the following is NOT an example of a chemical change?
Leaves changing color
Baking brownies
Cutting hair
Nail rusting
A student conducted an activity with the given experimental set up.
He observed that when baking powder is mixed with vinegar, carbon dioxide gas is released in test tube A and the lime water in test tube B turns milky. Which explains the type of changes that occurred in the test tubes?
Test tube A – physical change, as temperature did not change Test tube B – physical change, as the color of lime water changed
Test tube A – physical change, as bubbles were formed Test tube B – chemical change, as a new substance was formed
Test tube A – chemical change, as a gas was formed Test tube B – physical change, as the color of lime water changed
Test tube A – chemical change, as a gas was formed Test tube B – chemical change, as a new substance was formed
Which of these conditions would signify a chemical change has occurred when combining elements?
I. Emission of light
II. Change in mass
III. Emission of heat
IV. Change in volume
V. Formation of a precipitate
VI. Formation of gas bubbles
I, II, III
I, III, V
I, III, VI
I, IV, V
What is NOT a physical change?
freezing cheese
vaporizing cheese
burning cheese
melting cheese
What is NOT an example of a physical property?
Boiling Point
Flammability
Color
Texture
Which of the following mixtures can be separated using a sieve?
Sugar ang water
salt and water
Sand and gravel
oil and water
You accidentally spill a small amount of liquid on the counter. The liquid is not hazardous, but it could cause a mess. What should you do?
Leave the spill and continue with your experiment
Quickly clean up the spill with paper towels or a cloth
Inform the teacher and wait for instructions
Cover the spill with another object
For separating a mixture of salt and water, what method would be most effective?
Filtration
Evaporation
Chromatography
Centrifugation
When baking a cake, what kind of change occurs?
Physical Change
Chemical Change
Reversible Change
Evaporation
n a water purification system, which process is used to remove solid particles from the water?
Distillation
Filtration
Decantation
Evaporation
The situations are examples of changes in matter
I. Fireworks creating an explosion
II. Freezing water to create ice
III. Wood burning to create ash
IV. Hot water creating steam
V. Cookie dough creating cookies
Which of the following are examples of chemical change?
I , II
I, II, & III
I, III & V
All of the above
When you open a bottle of soda, you hear a fizzing sound. What causes this?
Air entering the bottle
The release of dissolved carbon dioxide gas
A chemical reaction between soda and air
The evaporation of the soda
In food packaging, why is aluminum foil used to wrap food?
It absorbs moisture
It is a poor conductor of heat
It reflects heat and light, keeping food warm
It is cheaper than other material
In a neutral atom, the number of protons is equal to the number of:
Neutrons
electrons
protons
quarks
A fire alarm goes off while you are conducting an experiment. What is the proper response?
Continue working until the alarm stops
Evacuate the lab calmly and follow the school's fire drill procedures
Try to put out any fires yourself
Wait for instructions from the teacher before leaving
Candy is on a camping trip with her parents. They decide to build a campfire to cook their dinner. The burning fire is an example of a —
physical and exothermic change
physical and endothermic change
chemical and exothermic change
chemical and endothermic change
The change of state from a solid to a liquid is called —
boiling
condensing
melting
vaporizing
For a student to be able to identify that a chemical change has occurred, which of the following could be observed?
Change of color, production of odor, production of gas, production of light
Change of color, did not produce a new substance, change shape of matter
Change of color, change in size, no indication of energy input or output
No change of color, no production of odor, no production of gas
Which of the following is a correct procedure for handling chemicals?
Smell the chemicals to test their properties
Read the label and follow the instructions carefully
Mix chemicals together to see what happens
Use any chemical without proper training
Which apparatus is used to measure the volume of a liquid accurately?
beaker
graduated cylinder
test tube
erlenmeyer flask
The smallest unit of an element that retains its chemical properties is:
molecule
atom
ion
compound
Which of the following is a heterogeneous mixture?
brass
air
vinegar
soil
A student receives a model of an atom that contains seven protons, neutrons, and electrons, and has an atomic mass of approximately 14. What procedure can the student use to identify the atom?
The student can reference the periodic table and find the element that has an atomic number of 7, which represents the number of neutrons in the atom.
The student can reference the periodic table and find the element that has an atomic number of 14, which represents the number of protons and neutrons in the atom.
The student can reference the periodic table and find the element that has an atomic number of 14, which represents the number of electrons and neutrons in the atom.
The student can reference the periodic table and find the element that has an atomic number of 7, which represents the number of protons in the atom.
The nucleus in the center of the atom is made up of —
protons and neutrons
protons and electrons
electrons and neutrons
protons only
Using the diagram pictured, how many protons would an atom of iodine contain?
53
127
74
21
What is the mass number of an atom?
The number of electrons
The sum of protons and neutrons
The number of neutrons
The sum of protons and electrons
What kind of change occurs when ice cream melts on a hot day?
Chemical change
Physical change
Oxidation
Sublimation
What is the physical state of matter with a definite volume but definite shape?
solid
liquid
gas
plasma
Why is water's ability to exist in all three states of matter important for the environment?
It allows for the formation of different types of rocks.
It enables the water cycle, which includes evaporation, condensation, and precipitation.
It helps in the formation of solid fuels.
It reduces the impact of temperature changes on plants.
Which of the following is characteristic of a physical change?
The change can be observed.
Substances are changed into different substances.
The substance is destroyed in the process.
The change is not observable.
Which of the following is NOT an example of a chemical change?
leaves changing color
baking brownies
cutting hair
nail rusting
What separation technique would you use to separate iron filings from sulfur?
Filtration
Magnetic Separation
Distillation
Decantation
A student is given several lab tools, including a beaker, a graduated cylinder, a pipette, and a test tube. The student needs to measure, mix, and heat liquids. Which statement best explains why a beaker is the most appropriate tool for this task?
A beaker is primarily used for precise volume measurements, unlike a graduated cylinder.
A beaker allows for easy mixing and heating of liquids due to its wide mouth and sturdy design, although it is less precise for measuring volume.
A beaker is designed for transferring small amounts of liquid accurately, similar to a pipette.
A beaker is mainly used for holding solids during chemical reactions and is not suitable for liquids.
A scientist is given four different samples: salt dissolved in water, pure iron, air, and a salad dressing made of oil and vinegar. Which of the following best explains which samples are mixtures and why?
Salt dissolved in water and air are mixtures because their components are physically combined and can be separated; pure iron and salad dressing are not mixtures.
Salt dissolved in water, air, and salad dressing are mixtures because they contain more than one substance physically combined; pure iron is a pure substance.
Air and pure iron are mixtures because they contain multiple substances; salt dissolved in water and salad dressing are pure substances.
Only pure iron is a mixture because it contains iron atoms; the rest are pure substances or solutions.
When baking a cake, several physical and chemical processes occur. Which statement best explains the type of change that happens during baking?
Baking a cake is a physical change because the ingredients just mix together without forming new substances.
B) Baking a cake is a chemical change because heat causes new substances to form, changing the batter into a solid cake with different properties.
Baking a cake is a physical change because the batter changes shape but can easily be returned to its original form.
Baking a cake is neither a physical nor a chemical change because it involves only temperature changes.
In a water purification system, several processes work together to clean water. Which process is primarily used to remove solid particles suspended in the water, and why is it effective?
Filtration, because it physically traps solid particles as water passes through a porous material.
Distillation, because it boils water to separate solids from the liquid by evaporation.
Chlorination, because it kills bacteria but does not remove solid particles.
Sedimentation, because it filters water through layers of sand and charcoal.
What change occurs when dry ice (solid CO2) is left at room temperature and turns directly into gas?
Melting
Freezing
Sublimation
Deposition
The table below shows the number of subatomic particles of different elements.
What is the mass number of the element “GOLD”
118
197
79
158
Which of the following statements is TRUE?
Titanium has more electrons than protons.
Gold has the same number of protons, neutrons, and electrons.
Silver has more neutrons than electrons.
Aluminum has the same number of protons and neutrons.
Which element in the table has the highest mass number?
Titanium
gold
silver
Aluminum
Fluorine has an atomic number of 9 and an atomic mass of 18.998. How many protons does an atom of fluorine have?
18
9
10
19
The atomic number of an element is always equal to the number of —
protons
protons and neutrons
neutrons
electrons
Which element has the mass number of 108?
Titanium
Gold
Silver
Aluminum
What is the mass number of the element “TITANIUM”
22
48
44
52
A chef is making lemonade and dissolves sugar completely into warm water before adding lemon juice. The sugar particles are no longer visible, and the mixture has a uniform taste throughout. What type of mixture is formed, and why?
A heterogeneous mixture, because the sugar and water can still be separated by filtering.
A solution, because the sugar is evenly distributed at the particle level and cannot be seen or easily separated.
A suspension, because the sugar is temporarily mixed and will settle over time.
A colloid, because the sugar particles are small enough to scatter light.
In winter, lakes freeze from the top down, allowing fish and other aquatic life to survive underneath. This happens because ice floats on water. Which explanation best describes why ice floats?
Ice is lighter than water because it contains fewer water molecules.
The molecules in ice are more spread out due to hydrogen bonding, making ice less dense than liquid water.
Cold water always rises to the top, pushing ice upward.
Air gets trapped inside ice, causing it to float.
You are given four samples: saltwater, salad dressing (oil and vinegar), air, and soil. Which of the following best identifies the heterogeneous mixture?
Saltwater, because the salt dissolves uniformly in water forming a consistent mixture.
Salad dressing, because oil and vinegar separate into distinct layers making the mixture non-uniform.
Air, because it is made up of several gases evenly mixed together.
Soil, because it is a pure substance composed only of minerals.
