Test Bank for Chemistry A
Molecular Approach, 5e
Nivaldo Tro (Correct
Answer Marked with *)
Chapter 1
1. Which of the following is an example of physical change?
a. Bread is baked.
b. Fireworks explode.
c. Baking soda decomposes.
*d. Sugar is dissolved in water.
2. Which of the following is an example of a physical change?
*a. Melting ice
b. Digesting food
c. Souring milk
d. Making water from hydrogen gas and oxygen gas
e. Burning wood
3. Which of the following is an example of a physical change?
a. An egg solidifies during cooking.
b. A hydrogen balloon explodes when contacted with a flame.
c. A Halloween light stick glows after shaking.
*d. Dew forms on a blade of grass.
e. None of the above is a physical change.
4. Which of the following is an example of a chemical change?
a. Solid ice melts.
b. Brewing tea.
c. Ethanol evaporates.
*d. Copper building materials develop a green patina over time.
5. Which of the following is an example of a chemical change?
a. Evaporating water
b. Sublimation of moth balls
c. Melting gold
*d. Burning wood
, e. Condensation of steam
6. A physical change ________.
*a. occurs when water is evaporated
b. occurs when sugar is heated into caramel
c. occurs when glucose is converted into energy within your cells
d. occurs when iron rusts
e. occurs when propane is burned for heat
7. A chemical change ________.
*a. occurs when methane gas is burned
b. occurs when sand is mixed with water
c. occurs when water is vaporized
d. occurs when powdered lemonade is stirred into water
e. occurs when paper is shredded
8. Which of the following represents a physical property?
*a. Mercury is a silvery liquid at room temperature.
b. Aluminum has a tendency to "rust."
c. Argon has an unreactive nature.
d. Butane is highly flammable.
e. Sodium metal is extremely reactive with chlorine gas.
9. Which of the following represents a chemical property of hydrogen
gas?
*a. It reacts explosively with oxygen.
b. It is colourless.
c. It is less dense than air.
d. It is gaseous at room temperature.
e. It is tasteless.
10. Total energy of an object is best defined as the sum of ________.
a. kinetic energy and thermal energy
b. potential energy and magnetic energy
*c. kinetic energy and potential energy
d. chemical energy and potential energy
e. chemical energy and magnetic energy
11. The energy associated with the temperature of an object is known as
the ________.
a. total energy
*b. thermal energy
, c. magnetic energy
d. gravitational energy
e. potential energy
12. ________ is the energy associated with motion of an object.
a. Potential energy
b. Solar energy
c. Total energy
*d. Kinetic energy
e. Gravitational energy
13. ________ is the energy associated with the position or composition
of an object.
a. Total energy
*b. Potential energy
c. Gravitational energy
d. Solar energy
e. Kinetic energy
14. Which of the following statements is FALSE?
a. Energy is neither created nor destroyed.
b. Physical and chemical changes are usually accompanied by
energy changes.
*c. When gasoline undergoes combustion, the molecules that are
newly formed have higher potential energy than the molecules that
compose gasoline.
d. When an object falls from a higher surface, gravitational
potential energy converts into kinetic energy.
e. The molecules that compose gasoline have chemical potential
energy.
15. Which of the following is an SI base unit?
*a. kelvin
b. volt
c. dozen
d. gram
e. hour
16. Identify the unit of measurement that is a SI base unit of
measurement.
a. pound
b. yard
c. Celsius
*d. second
, e. cup
17. Kilogram is a measure of ________.
*a. mass
b. time
c. temperature
d. length
e. volume
18. Metre is a measure of ________.
a. mass
b. time
c. temperature
*d. length
e. volume
19. Kelvin is a measure of ________.
a. mass
b. time
*c. temperature
d. length
e. volume
20. Second is a measure of ________.
a. mass
*b. time
c. temperature
d. length
e. volume
21. Mole is a measure of ________.
a. luminous intensity
b. current
c. length
*d. amount
e. mass
22. Ampere is a measure of ________.
a. amount
*b. current
c. length
d. mass
Molecular Approach, 5e
Nivaldo Tro (Correct
Answer Marked with *)
Chapter 1
1. Which of the following is an example of physical change?
a. Bread is baked.
b. Fireworks explode.
c. Baking soda decomposes.
*d. Sugar is dissolved in water.
2. Which of the following is an example of a physical change?
*a. Melting ice
b. Digesting food
c. Souring milk
d. Making water from hydrogen gas and oxygen gas
e. Burning wood
3. Which of the following is an example of a physical change?
a. An egg solidifies during cooking.
b. A hydrogen balloon explodes when contacted with a flame.
c. A Halloween light stick glows after shaking.
*d. Dew forms on a blade of grass.
e. None of the above is a physical change.
4. Which of the following is an example of a chemical change?
a. Solid ice melts.
b. Brewing tea.
c. Ethanol evaporates.
*d. Copper building materials develop a green patina over time.
5. Which of the following is an example of a chemical change?
a. Evaporating water
b. Sublimation of moth balls
c. Melting gold
*d. Burning wood
, e. Condensation of steam
6. A physical change ________.
*a. occurs when water is evaporated
b. occurs when sugar is heated into caramel
c. occurs when glucose is converted into energy within your cells
d. occurs when iron rusts
e. occurs when propane is burned for heat
7. A chemical change ________.
*a. occurs when methane gas is burned
b. occurs when sand is mixed with water
c. occurs when water is vaporized
d. occurs when powdered lemonade is stirred into water
e. occurs when paper is shredded
8. Which of the following represents a physical property?
*a. Mercury is a silvery liquid at room temperature.
b. Aluminum has a tendency to "rust."
c. Argon has an unreactive nature.
d. Butane is highly flammable.
e. Sodium metal is extremely reactive with chlorine gas.
9. Which of the following represents a chemical property of hydrogen
gas?
*a. It reacts explosively with oxygen.
b. It is colourless.
c. It is less dense than air.
d. It is gaseous at room temperature.
e. It is tasteless.
10. Total energy of an object is best defined as the sum of ________.
a. kinetic energy and thermal energy
b. potential energy and magnetic energy
*c. kinetic energy and potential energy
d. chemical energy and potential energy
e. chemical energy and magnetic energy
11. The energy associated with the temperature of an object is known as
the ________.
a. total energy
*b. thermal energy
, c. magnetic energy
d. gravitational energy
e. potential energy
12. ________ is the energy associated with motion of an object.
a. Potential energy
b. Solar energy
c. Total energy
*d. Kinetic energy
e. Gravitational energy
13. ________ is the energy associated with the position or composition
of an object.
a. Total energy
*b. Potential energy
c. Gravitational energy
d. Solar energy
e. Kinetic energy
14. Which of the following statements is FALSE?
a. Energy is neither created nor destroyed.
b. Physical and chemical changes are usually accompanied by
energy changes.
*c. When gasoline undergoes combustion, the molecules that are
newly formed have higher potential energy than the molecules that
compose gasoline.
d. When an object falls from a higher surface, gravitational
potential energy converts into kinetic energy.
e. The molecules that compose gasoline have chemical potential
energy.
15. Which of the following is an SI base unit?
*a. kelvin
b. volt
c. dozen
d. gram
e. hour
16. Identify the unit of measurement that is a SI base unit of
measurement.
a. pound
b. yard
c. Celsius
*d. second
, e. cup
17. Kilogram is a measure of ________.
*a. mass
b. time
c. temperature
d. length
e. volume
18. Metre is a measure of ________.
a. mass
b. time
c. temperature
*d. length
e. volume
19. Kelvin is a measure of ________.
a. mass
b. time
*c. temperature
d. length
e. volume
20. Second is a measure of ________.
a. mass
*b. time
c. temperature
d. length
e. volume
21. Mole is a measure of ________.
a. luminous intensity
b. current
c. length
*d. amount
e. mass
22. Ampere is a measure of ________.
a. amount
*b. current
c. length
d. mass
