Question 1

The average pressure of the atmosphere at sea level corresponds to which one or more of the following?

Accepted Answer

A) 101 Pa 
B) 101 kPa 
C) 98 kPa 
D) 15 lb/in2 
E) Both B and D 
A) 101 Pa 
B) 101 kPa 
C) 98 kPa 
D) 15 lb/in2 
E) Both B and D

Question 2

The specific heat of water is 4.2 kJ/kg$\circ$C.The heat needed to warm 8 kg of water from 20$\circ$C to 70$\circ$C is

Accepted Answer

A) 400 kJ. 
B) 420 kJ. 
C) 1680 kJ. 
D) 2016 kJ. 
A) 400 kJ. 
B) 420 kJ. 
C) 1680 kJ. 
D) 2016 kJ.

Question 3

Which of the following quantities is independent of the size and shape of an object composed of a given material?

Accepted Answer

A) volume 
B) mass 
C) weight 
D) density 
A) volume 
B) mass 
C) weight 
D) density

Question 4

Molecules are, in general, farthest apart from one another in

Accepted Answer

A) gases. 
B) liquids. 
C) crystalline solids. 
D) amorphous solids. 
A) gases. 
B) liquids. 
C) crystalline solids. 
D) amorphous solids.

Question 5

Of the substances below, the one with the highest specific heat is

Accepted Answer

A) water. 
B) ice. 
C) concrete. 
D) gold. 
A) water. 
B) ice. 
C) concrete. 
D) gold.

Question 6

Ice floats in water because

Accepted Answer

A) its density is less than that of water. 
B) its specific heat is less than that of water. 
C) it is a solid whereas water is a liquid. 
D) it is colder than water. 
A) its density is less than that of water. 
B) its specific heat is less than that of water. 
C) it is a solid whereas water is a liquid. 
D) it is colder than water.

Question 7

When a liquid becomes a vapor,

Accepted Answer

A) its temperature must decrease. 
B) its temperature must increase. 
C) it must absorb heat. 
D) it must give off heat. 
A) its temperature must decrease. 
B) its temperature must increase. 
C) it must absorb heat. 
D) it must give off heat.

Question 8

The freezing point of a substance is always lower than its

Accepted Answer

A) melting point. 
B) boiling point. 
C) heat of fusion. 
D) heat of vaporization. 
A) melting point. 
B) boiling point. 
C) heat of fusion. 
D) heat of vaporization.

Question 9

A container holds 1 g of air at atmospheric pressure.When an additional gram of air is pumped into the container and there is no change in temperature, the new pressure is

Accepted Answer

A) 0.5 atm. 
B) 1 atm. 
C) 2 atm. 
D) 4 atm. 
A) 0.5 atm. 
B) 1 atm. 
C) 2 atm. 
D) 4 atm.

Question 10

Heat transfer in a vacuum

Accepted Answer

A) can take place only by radiation. 
B) can take place only by radiation and convection. 
C) can take place by radiation, convection, and conduction. 
D) cannot take place. 
A) can take place only by radiation. 
B) can take place only by radiation and convection. 
C) can take place by radiation, convection, and conduction. 
D) cannot take place.

Question 11

The physics of a heat engine cannot be used to understand the operation of a

Accepted Answer

A) nuclear reactor. 
B) heat pump. 
C) refrigerator. 
D) diesel engine. 
A) nuclear reactor. 
B) heat pump. 
C) refrigerator. 
D) diesel engine.

Question 12

The entropy of a body of matter is a measure of

Accepted Answer

A) how cold it is. 
B) how disordered its molecules are. 
C) how many of its molecules are at rest. 
D) the average kinetic energy of its molecules. 
A) how cold it is. 
B) how disordered its molecules are. 
C) how many of its molecules are at rest. 
D) the average kinetic energy of its molecules.

Question 13

A 400-kg concrete block is 1 m long, 0.6 m wide, and 0.3 m high.Its density is

Accepted Answer

A) 72 kg/m. 
B) 222 kg/m. 
C) 667 kg/m. 
D) 2222 kg/m. 
A) 72 kg/m. 
B) 222 kg/m. 
C) 667 kg/m. 
D) 2222 kg/m.

Question 14

The "heat death" of the universe refers to a possible future in which all of its molecules are

Accepted Answer

A) at rest. 
B) as close together as possible. 
C) all moving with the same average speed. 
D) all moving in the same direction. 
A) at rest. 
B) as close together as possible. 
C) all moving with the same average speed. 
D) all moving in the same direction.

Question 15

Suppose there were molecules that had no attraction whatsoever for one another.A collection of such molecules would form a

Accepted Answer

A) gas. 
B) liquid. 
C) amorphous solid. 
D) crystalline solid. 
A) gas. 
B) liquid. 
C) amorphous solid. 
D) crystalline solid.

Question 16

A Celsius thermometer and an absolute thermometer are used to measure the temperature of the same gas sample.The readings on the thermometers are respectively TC and TK.Which is correct?

Accepted Answer

A) TC is smaller than TK. 
B) TC is larger than TK. 
C) TC is equal to TK. 
D) Any of these choices could be correct, depending on the gas temperature. 
A) TC is smaller than TK. 
B) TC is larger than TK. 
C) TC is equal to TK. 
D) Any of these choices could be correct, depending on the gas temperature.

Question 17

When a liquid freezes to become a solid,

Accepted Answer

A) its temperature rises. 
B) its temperature falls. 
C) it absorbs heat. 
D) it gives off heat. 
A) its temperature rises. 
B) its temperature falls. 
C) it absorbs heat. 
D) it gives off heat.

Question 18

Of the following, a molecule is best described as

Accepted Answer

A) any very tiny particle. 
B) the smallest particle found in nature. 
C) the smallest particle of a substance that is representative of the substance. 
D) the ultimate particle of which all matter is composed. 
A) any very tiny particle. 
B) the smallest particle found in nature. 
C) the smallest particle of a substance that is representative of the substance. 
D) the ultimate particle of which all matter is composed.

Question 19

The pressure on the bottom of an object inside a liquid is

Accepted Answer

A) less than the pressure on its top. 
B) equal to the pressure on its top. 
C) more than the pressure on its top. 
D) Any of these choices, depending on the nature of the liquid. 
A) less than the pressure on its top. 
B) equal to the pressure on its top. 
C) more than the pressure on its top. 
D) Any of these choices, depending on the nature of the liquid.

Question 20

When 90 kJ is removed from a 2-kg copper bar, its temperature drops from 200$\circ$C to 85$\circ$C.The specific heat of copper is

Accepted Answer

A) 0.16 kJ/kg$\circ$C. 
B) 0.19 kJ/kg$\circ$C. 
C) 0.23 kJ/kg$\circ$C. 
D) 0.39 kJ/kg$\circ$C. 
A) 0.16 kJ/kg$\circ$C. 
B) 0.19 kJ/kg$\circ$C. 
C) 0.23 kJ/kg$\circ$C. 
D) 0.39 kJ/kg$\circ$C.

The average pressure of the atmosphere at sea level corresponds to which one or more of the following?

The specific heat of water is 4.2 kJ/kg^$\circ$C.The heat needed to warm 8 kg of water from 20^$\circ$C to 70^$\circ$C is

Which of the following quantities is independent of the size and shape of an object composed of a given material?

Molecules are, in general, farthest apart from one another in

Of the substances below, the one with the highest specific heat is

Ice floats in water because

When a liquid becomes a vapor,

The freezing point of a substance is always lower than its

A container holds 1 g of air at atmospheric pressure.When an additional gram of air is pumped into the container and there is no change in temperature, the new pressure is

Heat transfer in a vacuum

The physics of a heat engine cannot be used to understand the operation of a

The entropy of a body of matter is a measure of

A 400-kg concrete block is 1 m long, 0.6 m wide, and 0.3 m high.Its density is

The "heat death" of the universe refers to a possible future in which all of its molecules are

Suppose there were molecules that had no attraction whatsoever for one another.A collection of such molecules would form a

A Celsius thermometer and an absolute thermometer are used to measure the temperature of the same gas sample.The readings on the thermometers are respectively T_C and T_K.Which is correct?

When a liquid freezes to become a solid,

Of the following, a molecule is best described as

The pressure on the bottom of an object inside a liquid is

When 90 kJ is removed from a 2-kg copper bar, its temperature drops from 200^$\circ$C to 85^$\circ$C.The specific heat of copper is

The Scientific Method

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Energy

Energy and the Future

Electricity and Magnetism

Waves

The Nucleus

The Atom

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The Rock Cycle

The Evolving Earth

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Exam 5: Matter and Heat

The average pressure of the atmosphere at sea level corresponds to which one or more of the following?

The specific heat of water is 4.2 kJ/kg ∘\circ∘ C.The heat needed to warm 8 kg of water from 20 ∘\circ∘ C to 70 ∘\circ∘ C is

Which of the following quantities is independent of the size and shape of an object composed of a given material?

Molecules are, in general, farthest apart from one another in

Of the substances below, the one with the highest specific heat is

Ice floats in water because

When a liquid becomes a vapor,

The freezing point of a substance is always lower than its

A container holds 1 g of air at atmospheric pressure.When an additional gram of air is pumped into the container and there is no change in temperature, the new pressure is

Heat transfer in a vacuum

The physics of a heat engine cannot be used to understand the operation of a

The entropy of a body of matter is a measure of

A 400-kg concrete block is 1 m long, 0.6 m wide, and 0.3 m high.Its density is

The "heat death" of the universe refers to a possible future in which all of its molecules are

Suppose there were molecules that had no attraction whatsoever for one another.A collection of such molecules would form a

A Celsius thermometer and an absolute thermometer are used to measure the temperature of the same gas sample.The readings on the thermometers are respectively TC and TK.Which is correct?

When a liquid freezes to become a solid,

Of the following, a molecule is best described as

The pressure on the bottom of an object inside a liquid is

When 90 kJ is removed from a 2-kg copper bar, its temperature drops from 200 ∘\circ∘ C to 85 ∘\circ∘ C.The specific heat of copper is

The Scientific Method

Motion

Energy

Energy and the Future

Electricity and Magnetism

Waves

The Nucleus

The Atom

The Periodic Law

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Stars

The Universe

Filters

The specific heat of water is 4.2 kJ/kg^$\circ$C.The heat needed to warm 8 kg of water from 20^$\circ$C to 70^$\circ$C is

A Celsius thermometer and an absolute thermometer are used to measure the temperature of the same gas sample.The readings on the thermometers are respectively T_C and T_K.Which is correct?

When 90 kJ is removed from a 2-kg copper bar, its temperature drops from 200^$\circ$C to 85^$\circ$C.The specific heat of copper is