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1

Since the Btu is based on the pound, its magnitude depends on the acceleration due to gravity.
A)True
B)False
2

The Btu is a larger unit of heat than the kilocalorie.
A)True
B)False
3

It is proper to speak of the heat capacity of a penny and the specific heat capacity of copper.
A)True
B)False
4

The specific heat of any material is the same numerically in either the metric or British system of units.
A)True
B)False
5

A unit mass of water will absorb a larger quantity of heat per degree change in temperature than any other common substance.
A)True
B)False
6

Since temperature is a measure of the average kinetic energy per molecule, the absorption or emission of thermal energy is always accompanied by a change in temperature.
A)True
B)False
7

More than 5 times the thermal energy is required to vaporize 1 g of water than is required to melt 1 g of ice.
A)True
B)False
8

Two objects that have the same heat capacity must be made of the same material.
A)True
B)False
9

The heat lost is equal to the heat gained unless a change of phase occurs.
A)True
B)False
10

The mass of water displaced by a thermometer in a calorimetry experiment is known as the water equivalent of the thermometer.
A)True
B)False
11

Which of the following is not a property of a material?
A)Specific heat
B)Heat capacity
C)Heat of fusion
D)Heat of combustion
12

Which of the following represents the largest transfer of heat?
A)600 cal
B)3 Btu
C)0.7 kcal
D)2200 ft * lb
13

Which of the following is best associated with the term heat?
A)A change of temperature
B)A change in kinetic energy
C)A change in thermal energy
D)A change in heat capacity
14

The specific heat of aluminum is 0.22 cal/(g * C°). The quantity of heat required to change the temperature of 10 lb of aluminum from 20 to 100°F is approximately
A)220 Btu
B)200 Btu
C)176 Btu
D)88 Btu
15

When a liquid freezes, it
A)evolves heat
B)absorbs heat
C)decreases in temperature
D)sublimes
16

The quantity of heat required to convert 10 g of ice at 0°C to steam at 100°C is
A)6300 cal
B)7200 cal
C)720 cal
D)1350 cal
17

If 50 g of aluminum shot (c = 0.22) is heated to 100°C and dropped into 200 g of water at 20°C, the equilibrium temperature (neglecting other heat transfers) is approximately
A)24°C
B)26°C
C)34°C
D)46°C
18

A 50-g aluminum calorimeter cup is partially filled with 200 g of water at 20°C. What mass of copper (c = 0.093) at 100°C should be added to the system for the equilibrium temperature to be 30°C?
A)32.4 g
B)47.5 g
C)324 g
D)476 g
19

For a given substance, which of the following processes transfers the largest amount of thermal energy per unit of mass?
A)Fusion
B)Vaporization
C)Freezing
D)Sublimation
20

If 5 g of steam at 100°C is mixed with 10 g of ice at 0°C, the equilibrium mixture includes
A)3.33 g of steam and 11.67 g of water
B)1.67 g of steam and 13.33 g of water
C)1.67 g of steam and 3.33 g of water
D)15 g of water
21

The is the quantity of heat required to change the temperature of 1 lb of water through 1 F°.
22

The calorie is the quantity of heat required to change the of of water through one .
23

The quantity of heat per unit mass of a substance required to change its temperature through one degree is called its .
24

The latent heat of fusion of a substance is the necessary to change of the substance from a(n) to a(n) at its .
25

The latent heat of vaporization is the heat per unit of a substance required to change it from a(n) to a(n) at its .
26

The of is the heat per unit mass required to burn a substance completely.
27

The latent heat of vaporization for water is cal/g, or Btu/lb.
28

The process in which a substance changes directly from its solid phase to its vapor phase is called .
29

The quantitative relationship between thermal energy units and mechanical energy units is called .
30

The conservation of heat energy states that in any given transfer of thermal energy the must equal the .





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