Question 1

How many kilocalories of heat would be needed to melt 0.12 kg of ice at 0°C and increase the temperature to 25°C?

Accepted Answer

The answer of How many kilocalories of heat would be...

Question 2

A constant volume and mass of helium gas at 77°C is heated so that the pressure of the gas doubles. What is the new temperature of the gas in Celsius degrees?

Accepted Answer

A)  154°C 
B)  273°C 
C)  427°C 
D)  700°C 
A)  154°C 
B)  273°C 
C)  427°C 
D)  700°C

Question 3

When a material is found to have a definite volume and definite shape, and when it doesn't require a container to maintain its shape, what is the phase of the material?

Accepted Answer

A)  Gas 
B)  Liquid 
C)  Plasma 
D)  Solid 
A)  Gas 
B)  Liquid 
C)  Plasma 
D)  Solid

Question 4

For an ideal gas with N and T held constant, an increase in volume will result in a(n) ______________ in pressure.

Accepted Answer

The answer of For an ideal gas with N and...

Question 5

A sample of gas has its number of molecules quadrupled, its Kelvin temperature doubled, and its volume tripled. By what factor has the new pressure changed relative to the original pressure?

Accepted Answer

A)  2.7 
B)  1.7 
C)  24.3 
D)  24 
A)  2.7 
B)  1.7 
C)  24.3 
D)  24

Question 6

The first law of thermodynamics states that heat added to a closed system can change the internal energy of the system and/or do ______________.

Accepted Answer

The answer of The first law of thermodynamics states that...

Question 7

A large calorie (Cal) is the amount of heat needed to change the temperature of one ______________ of water by one Celsius degree.

Accepted Answer

A)  dekagram 
B)  centigram 
C)  gram 
D)  kilogram 
A)  dekagram 
B)  centigram 
C)  gram 
D)  kilogram

Question 8

Solids, liquids, and gases are called ______________ of matter.

Accepted Answer

The answer of Solids, liquids, and gases are called ______________...

Question 9

The amount of heat necessary to change 1 kg of a solid into a liquid at the same temperature is called the

Accepted Answer

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

Question 10

The average kinetic energy of the molecules in a gas is a measure of

Accepted Answer

A)  volume. 
B)  density. 
C)  temperature. 
D)  heat content. 
A)  volume. 
B)  density. 
C)  temperature. 
D)  heat content.

Question 11

Which laboratory observation would most support the kinetic theory's assumption that molecules in a gas are widely separated?

Accepted Answer

A)  A gas exerts the same pressure on each part of a container's wall. 
B)  A gas is highly compressible. 
C)  A gas with a lower formula mass diffuses more rapidly than one with a higher formula mass. 
D)  A gas expands when the pressure on it is released. 
A)  A gas exerts the same pressure on each part of a container's wall. 
B)  A gas is highly compressible. 
C)  A gas with a lower formula mass diffuses more rapidly than one with a higher formula mass. 
D)  A gas expands when the pressure on it is released.

Question 12

A(n) ______________ transfers heat from a low-temperature reservoir to a high-temperature reservoir.

Accepted Answer

The answer of A(n) ______________ transfers heat from a low-temperature...

Question 13

The Sun's rays are transmitted to Earth by means of

Accepted Answer

A)  radiation. 
B)  convection. 
C)  temperature. 
D)  conduction. 
A)  radiation. 
B)  convection. 
C)  temperature. 
D)  conduction.

Question 14

How much heat is necessary to change 20 g of water at 100°C into steam at 100°C?

Accepted Answer

A)  0.16 kcal 
B)  10800 kcal 
C)  10.8 kcal 
D)  1.6 kcal 
A)  0.16 kcal 
B)  10800 kcal 
C)  10.8 kcal 
D)  1.6 kcal

Question 15

An ideal gas is confined to a container with an adjustable volume. If the number of molecules and the temperature are held constant, by what factor will the volume change when the pressure is quintupled?

Accepted Answer

A)  25 
B)  0.2 
C)  0.04 
D)  5 
A)  25 
B)  0.2 
C)  0.04 
D)  5

Question 16

Gas pressure is caused by molecular ______________ with the walls of the container.

Accepted Answer

The answer of Gas pressure is caused by molecular ______________...

Question 17

How much heat is required to melt 5.0 kg of ice at 0°C to water at 0°C?

Accepted Answer

4.0 * 10<s

Question 18

In measuring any temperature less than 500 Fahrenheit, which of the following scales will have the highest numeric reading?

Accepted Answer

A)  Fahrenheit 
B)  Celsius 
C)  Kelvin 
D)  None of these 
A)  Fahrenheit 
B)  Celsius 
C)  Kelvin 
D)  None of these

Question 19

A heat engine

Accepted Answer

A)  converts heat to work. 
B)  converts heat to internal energy. 
C)  transfers heat from a low-temperature reservoir. 
D)  converts work to heat. 
A)  converts heat to work. 
B)  converts heat to internal energy. 
C)  transfers heat from a low-temperature reservoir. 
D)  converts work to heat.

Question 20

What happens to a sample of water when its temperature is reduced between 4°C and 100°C?

Accepted Answer

A)  Its density increases. 
B)  It vaporizes. 
C)  Its density decreases. 
D)  Its density remains constant. 
A)  Its density increases. 
B)  It vaporizes. 
C)  Its density decreases. 
D)  Its density remains constant.

Exam 5: Temperature and Heat

How many kilocalories of heat would be needed to melt 0.12 kg of ice at 0°C and increase the temperature to 25°C?

A constant volume and mass of helium gas at 77°C is heated so that the pressure of the gas doubles. What is the new temperature of the gas in Celsius degrees?

When a material is found to have a definite volume and definite shape, and when it doesn't require a container to maintain its shape, what is the phase of the material?

For an ideal gas with N and T held constant, an increase in volume will result in a(n) ______________ in pressure.

A sample of gas has its number of molecules quadrupled, its Kelvin temperature doubled, and its volume tripled. By what factor has the new pressure changed relative to the original pressure?

The first law of thermodynamics states that heat added to a closed system can change the internal energy of the system and/or do ______________.

A large calorie (Cal) is the amount of heat needed to change the temperature of one ______________ of water by one Celsius degree.

Solids, liquids, and gases are called ______________ of matter.

The amount of heat necessary to change 1 kg of a solid into a liquid at the same temperature is called the

The average kinetic energy of the molecules in a gas is a measure of

Which laboratory observation would most support the kinetic theory's assumption that molecules in a gas are widely separated?

A(n) ______________ transfers heat from a low-temperature reservoir to a high-temperature reservoir.

The Sun's rays are transmitted to Earth by means of

How much heat is necessary to change 20 g of water at 100°C into steam at 100°C?

An ideal gas is confined to a container with an adjustable volume. If the number of molecules and the temperature are held constant, by what factor will the volume change when the pressure is quintupled?

Gas pressure is caused by molecular ______________ with the walls of the container.

How much heat is required to melt 5.0 kg of ice at 0°C to water at 0°C?

In measuring any temperature less than 500 Fahrenheit, which of the following scales will have the highest numeric reading?

A heat engine

What happens to a sample of water when its temperature is reduced between 4°C and 100°C?

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