Font size
WorksheetsScience 10_Reviewer 4thQ
Total questions: 60
Worksheet time: 1hrs 3mins
Why does the mass of air have almost negligible volume?
It has molecules that are compressible.
It has molecules that are scattered and move in random motion.
It has molecules that are sensitive to pressure.
It has molecules that take the shape of the container.
Amino acids are the building blocks of which group of biomolecules?
Carbohydrates
Lipids
Nucleic acid
Proteins
What do you call to a substance that increases the rate of chemical reaction?
Catalyst
Inhibitor
Product
Reactant
Which of the following describes any molecules that are produced by a living organism?
Biomolecule
Enzyme
Isomers
Monomer
What is one word for a short representation of a chemical reaction?
Chemical Equation
Formula
Property
Symbol
What is the relationship between pressure and volume at constant temperature at fixed amount of gas?
Directly proportional
Inversely proportional
No relationship
Temperature is unstable.
What do you call the minimum amount of energy required to start a reaction?
Activation energy
Energy of reaction
Entropy of reaction
Reaction mechanism energy
What do you call a substance that is made up of more than one type of atom bonded together?
Compound
Elements
Product
Reactant
Which of the following contains the most lipids?
Banana
Champorado
Cheese
Olive oil
Which of the following affects the rate of the reactions?
Color
Pressure
Surface area
Temperature
Saddie wants to go hiking with his friends, which of the following foods will give him enough energy to do hiking?
Butter
Ice cream
Rice
Nuts
Which of the following elements is NOT present in carbohydrates?
Carbon
Hydrogen
Oxygen
Nitrogen
What usually happens during chemical reactions?
Atoms are destroyed
Atoms are rearranged
Elements are destroyed.
New elements are produced.
What theory states that reactant particles must collide with each other for a reaction to occur?
Balancing theory
Collision theory
Energy activation theory
Orientation theory
Which of the following situations proves Boyle's Law?
Push the plunger of a syringe, volume of air will decrease.
Push the plunger of a syringe, volume of air will increase.
Pull the plunger of a syringe, volume of air is constant.
Pull the plunger of a syringe, volume of air is negligible.
What is the relationship between volume and temperature at constant pressure at fixed amount of gas?
Directly proportional
Inversely proportional
No relationship
Both A and B
Which of the following is NOT a major source of protein?
Egg
Fish
Milk
Vegetable
In the equation N2 + H2 → NH3, NH3 is?
Equation
Production
Product
Reactant
Which of the following activity undergoes chemical change?
Burning of paper.
Cutting paper.
Boiling Water
Melting of ice
What do you expect to happen to the volume of a gas if its temperature doubled and its pressure remained constant?
Its volume decreased.
Its volume is doubled.
Its volume remains unchanged.
Its volume reduced to half.
What is it called when the mass of reactants is equal to the mass of products of chemical reaction?
Law of conservation of mass
Law of interaction
Law of gravity
Law of reflection
Cole and Sam are playing basketball outside in 40 °C temperature. If they leave the ball outside and the temperature drops down to 16 °C, what will happen to the volume of the gas in the ball if the pressure remains constant?
Volume will increase.
Volume will decrease.
Volume will double.
Volume will remain the same.
What happens to the kinetic energy of the molecule if there is an increase in temperature?
It will increase and decrease.
The kinetic energy will decrease.
The kinetic energy will increase.
The kinetic energy will remain the same.
Which of the following is the monomer of Nucleic acid?
Amino Acid
Glucose
Glycerol
Nucleotides
What variable refers to the hotness and coldness of air?
Mass
Pressure
Temperature
Volume
If the volume of a confined gas is doubled while the temperature remains constant, what changes would only be observed in the pressure?
It would double.
It would be half as large.
It would remain the same.
It would be 3 times as large.
What is most likely to happen when an aerosol can is heated?
The can will be deformed.
The can will eventually explode
The can will stay the same.
The can will tarnish.
What happens to the volume of a gas if the pressure increases, and the temperature remain constant?
Decreases
Double
Increases
Remain constant.
How do gas particles respond to an increase in volume?
Decrease in kinetic energy and decrease in pressure.
Increase in kinetic energy and decrease in temperature.
Increase in temperature and increase in pressure.
Increase in kinetic energy and increase in temperature.
Which of the following situations shows that air molecules can be compressed?
Justine can still pump air in the party balloon even though it is inflated.
Soda can burst out after shaking it vigorously.
Plastic bottle shows deformation due to heat.
An aerosol exploded after heating.
What do you call to a substance that is present at the start of the chemical equation?
Product
Production
Reactant
Reaction
A scuba diver needs a diving tank to provide breathing gas while he is underwater. How much pressure is needed for 6.00 L of a gas at 1.01 atmospheric pressure to be compressed in a 3.00 L cylinder?
0 atm
2 atm
4 atm
6 atm
Jaycee wants to have a portable oxygen tank. A 5.00-liter oxygen gas exerts a pressure of 1.00 atm. How much pressure is needed for this gas to be compressed in a 2.00 L cylinder, provided there is no temperature change?
1.5 atm
2.0 atm
2.5 atm
3.0 atm
Which of the following phenomena best illustrates Charles' Law?
Hot air balloon
Pressure in an oxygen tank
Use of oven to reheat food.
Use of bicycle pump or inflate the tire.
A tank (not rigid) contains 2.3 L of helium gas at 25 °C. What will be the volume of the tank after heating it and its content to 40 °C temperature at constant pressure?
2.1 L
4.2 L
5.3 L
3.4 L
Oxygen gas inside a 1.5 L gas tank has a pressure of 0.95 atm. Provided that the temperature remains constant, how much pressure is needed to reduce its volume by ½ ?
1.7 atm
1.8 atm
1.9 atm
2.0 atm
What are the products in the equation below? Zn + CuSO4 →ZnSO4 + Cu
Zn and Cu
ZnSO4 and Cu
Zn and CuSO4
Zn only
Which of the following biomolecules serves as the main source of energy for the body?
Carbohydrates
Lipids
Nucleic Acid
Protein
What will happen to the volume of a gas as the temperature decreases at constant pressure?
The volume of the gas increases
The volume of the gas decreases.
The volume of the gas will double
The volume of the gas remains constant
A cylinder with a movable piston contains 250 cm3 of air at 10 °C. If the pressure is kept constant, at what temperature would you expect the volume to be 150 cm3?
159.8 K
169.8 K
179.8 K
189.8 K
How can you possibly prove that gases have almost negligible mass?
Ask two people to hold a box filled with air.
Feel the weight of the samples using your hands.
Put a balloon on a digital balance before and after you fill it with air.
Support your claim using an equation.
What is the final volume if 60 mL of gas at 33 oC is cooled to 15 oC?
56.5mL
66.5mL
76.5mL
86.5mL
Which most likely to happen when a closed vessel filled with gas is shaken for 2 minutes?
The pressure inside the vessel increases.
The temperature inside the vessel increases
The temperature and pressure inside the vessel decreases.
The temperature and pressure inside the vessel increases.
What type of chemical reaction is being shown?
AB + CD → AD + CB
Combination
Double replacement
Single replacement
Combustion
What type of chemical reaction occurs wherein a single compound is broken down into two or more elements and a compound?
Combustion
Combination
Decomposition
Displacement
What is a type of reaction in which two or more reactants combine to give a single product?
Synthesis
Double replacement
Combustion
Decomposition
What will be the product in the equation?
C(S) + O2 (g) → _________
C(s)
O2
CO2
CO3
How many reactants and products are found in combination reaction?
1 Reactant, 2 Products
2 Reactants, 1 Product
3 Reactants, 1 Product
2 Reactants, 2 Products
Which of the following equations shows a single replacement reaction?
Fe + NaBr → FeBr3 + Na
C(s) + O2 → CO2
NaNO3 → NaNO2 + O2
NaOH + KNO3 → NaNO3 + KOH
What would happen to the reaction rate if the temperature of reaction decreased?
It will have no effect.
The reaction will stop.
The rate of reaction will increase.
The rate of reaction will decrease.
Which of the following would NOT increase the rate of reaction?
Raising the temperature.
Adding catalyst.
Increasing the concentration of the reactants.
Increasing the volume of the container.
Which condition will increase the rate of chemical reaction?
Increase temperature and decreased concentration of reactants.
Increase temperature and increase concentration of reactant.
Decreased temperature and decreased concentration of reactants.
Decrease temperature and increased concentration of reactants.
The rate of a chemical reaction can be expressed in ___________?
Grams per mole.
Energy consumed per mole.
Moles formed per liter of solution.
Volume of gas per unit time.
What would be the balanced equation for this chemical reaction?
__ NaBr + __ Ca(OH)2 → __ CaBr2 + __ NaOH
3 NaBr + Ca(OH)2 → CaBr2 + 2 NaOH
4 NaBr + Ca(OH)2 →CaBr2 + 2 NaOH
2 NaBr + Ca(OH)2 →CaBr2 + 3 NaOH
2 NaBr + Ca(OH)2 →CaBr2 + 2 NaOH
What would be the balanced equation for this chemical reaction?
__ NH3 + __ H2 (SO4) → __ (NH4)2 (SO4)
2 NH3 + H2SO4 → (NH4)2SO4
4 NH3 + H2SO4 → (NH4) 2SO4
6 NH3+ H2SO4 → (NH4) 2SO4
8 NH3 + H2SO4 → (NH4) 2SO4
What would be the balanced equation for this chemical reaction?
__ C5H9O + __ O2 → __ CO2 + __ H2O
2 C5H9O + 27 O2 → 20 CO2 + 16 H2O
3 C5H9O + 28 O2 → 20 CO2 + 18 H2O
4 C5H9O + 29 O2 → 20 CO2 + 18 H2O
2 C5H9O + 20 O2 → 29 CO2 + 16 H2O
What would be the balanced equation for this chemical reaction?
__ Pb + __ H3(PO4) → __ H2 + __ Pb3(PO4)2
3 Pb + 3 H3(PO4) → 2 H2 + Pb3(PO4)
3 Pb + 2 H3(PO4) → 3 H2 + Pb3(PO4)
2 Pb + 3 H3(PO4) → 3 H2 + Pb3(PO4)
2 Pb + 3 H3(PO4) → 2 H2 + Pb3(PO4)
What is the term for a substance that speeds up a chemical reaction without being consumed in the process?
Catalyst
Inhibitor
Product
Reactant
Which of the following is NOT a characteristic of a chemical reaction?
Change in color
Change in temperature
Change in mass
Change in volume
Which of the following biomolecules is primarily responsible for storing genetic information in cells?
Carbohydrates
Lipids
Nucleic Acid
Protein
