Question 1

The units of specific heat are

Accepted Answer

A)  kcal-kg/°C. 
B)  J/kg-°C. 
C)  kcal-kg. 
D)  J/kg. 
A)  kcal-kg/°C. 
B)  J/kg-°C. 
C)  kcal-kg. 
D)  J/kg.

Question 2

The ______________ temperature scale has no negative readings.

Accepted Answer

The answer of The ______________ temperature scale has no negative...

Question 3

Which of the following is not directly involved in the second law of thermodynamics?

Accepted Answer

A)  Spontaneous heat flow 
B)  Converting all heat input into work 
C)  Conservation of energy 
D)  Entropy 
A)  Spontaneous heat flow 
B)  Converting all heat input into work 
C)  Conservation of energy 
D)  Entropy

Question 4

When a material is found to have a definite volume but no definite shape, and when it assumes the shape of the container in which it is placed, 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 5

For every natural process, the entropy of the universe

Accepted Answer

A)  is destroyed. 
B)  decreases. 
C)  increases. 
D)  remains constant. 
A)  is destroyed. 
B)  decreases. 
C)  increases. 
D)  remains constant.

Question 6

Water has a specific heat value of ______________.

Accepted Answer

The answer of Water has a specific heat value of...

Question 7

How much heat is necessary to change 10 g of water at 30°C into steam at 100°C?

Accepted Answer

A)  0.07 kcal 
B)  0.7 kcal 
C)  6.1 kcal 
D)  0.67 kcal 
A)  0.07 kcal 
B)  0.7 kcal 
C)  6.1 kcal 
D)  0.67 kcal

Question 8

A temperature of degrees 250 Celsius is equivalent to _____ degrees Fahrenheit.

Accepted Answer

A)  -9.4 
B)  482.0 
C)  121.1 
D)  -23.0 
A)  -9.4 
B)  482.0 
C)  121.1 
D)  -23.0

Question 9

If the volume and the number of molecules remain constant for a gas, a temperature increase causes the pressure to ______________.

Accepted Answer

The answer of If the volume and the number of...

Question 10

At approximately what temperature does water have its greatest density?

Accepted Answer

A)  4°C 
B)  100°C 
C)  0°C 
D)  None of these; the density of water is constant at all temperatures. 
A)  4°C 
B)  100°C 
C)  0°C 
D)  None of these; the density of water is constant at all temperatures.

Question 11

A temperature of -65 Kelvin is equivalent to _____ degrees Celsius.

Accepted Answer

A)  219.1 
B)  208.0 
C)  -53.9 
D)  -338.2 
A)  219.1 
B)  208.0 
C)  -53.9 
D)  -338.2

Question 12

A sample of gas has its number of molecules halved, its Kelvin temperature doubled, and its volume halved. What is the new pressure, relative to the original pressure?

Accepted Answer

It is doub

Question 13

The Celsius degree is

Accepted Answer

A)  the same size as the Fahrenheit degree. 
B)  larger than the kelvin. 
C)  the same size as the kelvin. 
D)  smaller than the Fahrenheit degree. 
A)  the same size as the Fahrenheit degree. 
B)  larger than the kelvin. 
C)  the same size as the kelvin. 
D)  smaller than the Fahrenheit degree.

Question 14

Which of the following has the highest thermal conductivity?

Accepted Answer

A)  Air 
B)  A newspaper 
C)  A rug 
D)  An aluminum saucepan 
A)  Air 
B)  A newspaper 
C)  A rug 
D)  An aluminum saucepan

Question 15

The heating of a room by a fire in a fireplace is chiefly due to

Accepted Answer

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

Question 16

When 10 kcal of heat is added to 2.0 kg of a substance, its temperature increases 20 C°. What is the specific heat of the substance?

Accepted Answer

The answer of When 10 kcal of heat is added...

Question 17

A change of phase takes place at a constant

Accepted Answer

A)  temperature. 
B)  volume. 
C)  heat. 
D)  pressure. 
A)  temperature. 
B)  volume. 
C)  heat. 
D)  pressure.

Question 18

The insulation in walls uses which of the following methods to prevent heat transfer?

Accepted Answer

A)  Conduction 
B)  Convection 
C)  Radiation 
D)  Conduction and convection 
E)  All of these 
A)  Conduction 
B)  Convection 
C)  Radiation 
D)  Conduction and convection 
E)  All of these

Question 19

A temperature of degrees 260 Celsius is equivalent to _____ Kelvin.

Accepted Answer

A)  8.6 
B)  533.2 
C)  126.7 
D)  -13.0 
A)  8.6 
B)  533.2 
C)  126.7 
D)  -13.0

Question 20

A ______________ is an ultra-hot collection of electrically charged particles.

Accepted Answer

A)  gas 
B)  liquid 
C)  plasma 
D)  solid 
A)  gas 
B)  liquid 
C)  plasma 
D)  solid

Exam 5: Temperature and Heat

The units of specific heat are

The ______________ temperature scale has no negative readings.

Which of the following is not directly involved in the second law of thermodynamics?

When a material is found to have a definite volume but no definite shape, and when it assumes the shape of the container in which it is placed, what is the phase of the material?

For every natural process, the entropy of the universe

Water has a specific heat value of ______________.

How much heat is necessary to change 10 g of water at 30°C into steam at 100°C?

A temperature of degrees 250 Celsius is equivalent to _____ degrees Fahrenheit.

If the volume and the number of molecules remain constant for a gas, a temperature increase causes the pressure to ______________.

At approximately what temperature does water have its greatest density?

A temperature of -65 Kelvin is equivalent to _____ degrees Celsius.

A sample of gas has its number of molecules halved, its Kelvin temperature doubled, and its volume halved. What is the new pressure, relative to the original pressure?

The Celsius degree is

Which of the following has the highest thermal conductivity?

The heating of a room by a fire in a fireplace is chiefly due to

When 10 kcal of heat is added to 2.0 kg of a substance, its temperature increases 20 C°. What is the specific heat of the substance?

A change of phase takes place at a constant

The insulation in walls uses which of the following methods to prevent heat transfer?

A temperature of degrees 260 Celsius is equivalent to _____ Kelvin.

A ______________ is an ultra-hot collection of electrically charged particles.

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