Question 1

The specific heat capacity of copper is three times the specific heat capacity of lead.Equal masses of copper and lead are heated from room temperature to the temperature of boiling water.To achieve this,the amount of heat added to the copper is ___________ the amount of heat added to the lead.

Accepted Answer

The amount of heat added (Q) is given by Q = mcΔT, where m is mass, c is specific heat capacity, and ΔT is the change in temperature. Since the specific heat capacity of copper is three times that of lead, and the masses and temperature changes are the same, the heat added to copper is three times that added to lead.

Question 2

specific heat capacity of ice = 2,000 J/kg-°C
latent heat of fusion of water = 334,000 J/kg
specific heat capacity of water = 4,000 J/kg-°C
-After the 1 kg block of ice melts,the amount of heat required to raise its temperature to 10 °C is

Accepted Answer

The answer of specific heat capacity of ice = 2,000...

Question 3

When droplets of condensation form on the outside of a glass of ice water,it must be that in the air right next to the glass

Accepted Answer

Droplets of condensation form on the outside of a glass of ice water when the temperature of the glass surface is below the dew point temperature of the air next to it. The dew point temperature is the temperature at which the air would become saturated with water vapor if it were cooled further. Therefore, when the temperature near the glass is near the dew point temperature, it means that the humidity is near the saturation density, and the relative humidity is near 100%. So, all of the choices (A), (B), and (C) are correct.

Question 4

specific heat capacity of ice = 2,000 J/kg-°C
latent heat of fusion of water = 334,000 J/kg
specific heat capacity of water = 4,000 J/kg-°C
-As the ice is melting,the temperature of the ice-water mixture rises by

Accepted Answer

When ice is melting, it requires energy in the form of latent heat of fusion to break the intermolecular bonds between the molecules. Once all the ice has melted, the energy being supplied starts to raise the temperature of the water. During this process, the temperature of the ice-water mixture does not change until all the ice has melted. Therefore, the temperature of the mixture will remain at 0°C during the melting process. Hence, the correct choice is A) 0°C.

Question 5

specific heat capacity of ice = 2,000 J/kg-°C
latent heat of fusion of water = 334,000 J/kg
specific heat capacity of water = 4,000 J/kg-°C
-The 1 kg block of ice melts into water.The amount of heat absorbed by the ice as it melts is

Accepted Answer

The heat absorbed by the ice as it melts is equal to the latent heat of fusion, which is 334,000 J/kg for water.

Question 6

The change in size of an object due to thermal expansion depends upon

Accepted Answer

Thermal expansion depends on the material (A), the original size of the object (B), and the temperature change (C).

Question 7

Which mechanism(s)of heat transfer will work in a vacuum?

Accepted Answer

Radiation is the only mechanism of heat transfer that can work in a vacuum because it does not require a medium to transfer heat. Conduction and convection both require a medium, such as a solid or fluid, to transfer heat. Therefore, the best choice is C.

Question 8

A hot pizza contains

Accepted Answer

Internal energy refers to the total energy contained within a system. The hot pizza contains internal energy due to the heat that is stored within it, which is transferred from the oven where it was cooked. While heat is a form of energy, it is not a property or quantity of the pizza itself. Temperature is a measure of the average kinetic energy of particles within a system, but it is not a quantity that is stored within the pizza. Work is the transfer of energy between systems due to the application of force, and it is not a factor in the energy content of the pizza.

Question 9

The total kinetic and potential energies of all the atoms and molecules of a substance is its

Accepted Answer

The total kinetic and potential energies of all the atoms and molecules of a substance is referred to as its internal energy. Therefore, option B is the correct answer. Heat is the transfer of energy from a high-temperature body to a low-temperature body, temperature is a measure of the average kinetic energy of the particles in a substance, and thermodynamics is the study of energy transformations and their relationships to work done on a system.

Question 10

When water boils,its temperature

Accepted Answer

When water boils, it undergoes a phase change from liquid to gas, and during this process, the temperature of the water remains constant at the boiling point, which is 100°C (212°F) at sea level. Therefore, the correct answer is C: stays constant.

Question 11

The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass.An ordinary glass rod and a Pyrex glass rod of equal lengths at room temperature are dropped into boiling water.The change in length of the ordinary glass rod will be ___________ the change in length of the Pyrex glass rod.

Accepted Answer

Since the coefficient of linear expansion of ordinary glass is three times that of Pyrex glass, the change in length of the ordinary glass rod will be three times that of the Pyrex glass rod. Therefore, the answer is D, 3 times.

Question 12

What's wrong with the statement "heat rises?"

Accepted Answer

While it's commonly stated that "heat rises", it is not technically correct as heat itself is a form of energy and does not have any physical mass that can rise. It is more accurate to say that heated air or other fluids rise due to a decrease in density, caused by an increase in temperature, and that the energy responsible for this process is thermal energy.

Question 13

The Eiffel tower in Paris is made primarily of iron,whose coefficient of linear expansion is about 10 × 10−⁶/°C.On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall.Its height on a hot day when the temperature is 40°C is

Accepted Answer

The answer of The Eiffel tower in Paris is made...

Question 14

The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water.The amount of heat required to boil away 1 kg of water is __________ the amount of heat required to melt 1 kg of ice.

Accepted Answer

The latent heat of vaporization of water is roughly 10 times greater than the latent heat of fusion of water. Therefore, the amount of heat required to boil away 1 kg of water is 10 times greater than the amount of heat required to melt 1 kg of ice.

Question 15

When ice melts,its temperature

Accepted Answer

When ice melts, it undergoes a phase change from solid to liquid at a constant temperature, which is the melting point.

Question 16

Why do bridges have expansion joints?

Accepted Answer

Bridges undergo thermal expansion and contraction due to changes in temperature. If there were no expansion joints, the bridge would buckle and crack due to the forces resulting from this expansion and contraction. Expansion joints allow the bridge to expand and contract without causing damage. While choices B, C, and D may also be true to some extent, they do not directly address the primary purpose of expansion joints on bridges.

Question 17

The temperature of a gas can be increased by

Accepted Answer

Compressing a gas increases its temperature due to increased kinetic energy of particles. Adding heat directly increases temperature. Doing work on the gas, such as compressing it, also increases temperature.

Question 18

Natural processes tend to increase the __________ of thermodynamic systems.

Accepted Answer

The second law of thermodynamics states that the entropy of an isolated system will tend to increase over time. Therefore, natural processes tend to increase the entropy of thermodynamic systems. The other options are not necessarily always true for all natural processes.

Question 19

The specific heat capacity of water is about twice the specific heat capacity of ice.From this information,the amount of heat required to boil 1 kg of water is ________ the amount of heat required to melt 1 kg of ice.

Accepted Answer

The specific heat capacity is unrelated to the latent heat required for phase changes such as melting or boiling. The heat required to melt ice or boil water depends on the latent heat of fusion or vaporization, not the specific heat capacity.

Question 20

specific heat capacity of ice = 2,000 J/kg-°C
latent heat of fusion of water = 334,000 J/kg
specific heat capacity of water = 4,000 J/kg-°C
-A 1 kg block of ice is removed from a freezer where its temperature was -10°C.The amount of heat absorbed by the ice as it warms to 0°C is

Accepted Answer

The amount of heat absorbed by the ice as it warms to 0°C can be calculated using the formula Q = mcΔT, where Q is the amount of heat absorbed, m is the mass of the ice (1 kg), c is the specific heat capacity of ice (2,000 J/kg-°C), and ΔT is the change in temperature (0°C - (-10°C) = 10°C). Thus, Q = (1 kg)(2,000 J/kg-°C)(10°C) = 20,000 J.

Quiz 5: Temperature and Heat

The specific heat capacity of copper is three times the specific heat capacity of lead.Equal masses of copper and lead are heated from room temperature to the temperature of boiling water.To achieve this,the amount of heat added to the copper is ___________ the amount of heat added to the lead.

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -After the 1 kg block of ice melts,the amount of heat required to raise its temperature to 10 °C is

When droplets of condensation form on the outside of a glass of ice water,it must be that in the air right next to the glass

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -As the ice is melting,the temperature of the ice-water mixture rises by

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -The 1 kg block of ice melts into water.The amount of heat absorbed by the ice as it melts is

The change in size of an object due to thermal expansion depends upon

Which mechanism(s) of heat transfer will work in a vacuum?

A hot pizza contains

The total kinetic and potential energies of all the atoms and molecules of a substance is its

When water boils,its temperature

What's wrong with the statement "heat rises?"

The Eiffel tower in Paris is made primarily of iron,whose coefficient of linear expansion is about 10 × 10−⁶/°C.On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall.Its height on a hot day when the temperature is 40°C is

The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water.The amount of heat required to boil away 1 kg of water is __________ the amount of heat required to melt 1 kg of ice.

When ice melts,its temperature

Why do bridges have expansion joints?

The temperature of a gas can be increased by

Natural processes tend to increase the __________ of thermodynamic systems.

The specific heat capacity of water is about twice the specific heat capacity of ice.From this information,the amount of heat required to boil 1 kg of water is ________ the amount of heat required to melt 1 kg of ice.

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -A 1 kg block of ice is removed from a freezer where its temperature was -10°C.The amount of heat absorbed by the ice as it warms to 0°C is

Quiz 5: Temperature and Heat

The specific heat capacity of copper is three times the specific heat capacity of lead.Equal masses of copper and lead are heated from room temperature to the temperature of boiling water.To achieve this,the amount of heat added to the copper is ___________ the amount of heat added to the lead.

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -After the 1 kg block of ice melts,the amount of heat required to raise its temperature to 10 °C is

When droplets of condensation form on the outside of a glass of ice water,it must be that in the air right next to the glass

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -As the ice is melting,the temperature of the ice-water mixture rises by

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -The 1 kg block of ice melts into water.The amount of heat absorbed by the ice as it melts is

The change in size of an object due to thermal expansion depends upon

Which mechanism(s) of heat transfer will work in a vacuum?

A hot pizza contains

The total kinetic and potential energies of all the atoms and molecules of a substance is its

When water boils,its temperature

What's wrong with the statement "heat rises?"

The Eiffel tower in Paris is made primarily of iron,whose coefficient of linear expansion is about 10 × 10−6/°C.On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall.Its height on a hot day when the temperature is 40°C is

The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water.The amount of heat required to boil away 1 kg of water is __________ the amount of heat required to melt 1 kg of ice.

When ice melts,its temperature

Why do bridges have expansion joints?

The temperature of a gas can be increased by

Natural processes tend to increase the __________ of thermodynamic systems.

The specific heat capacity of water is about twice the specific heat capacity of ice.From this information,the amount of heat required to boil 1 kg of water is ________ the amount of heat required to melt 1 kg of ice.

specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C -A 1 kg block of ice is removed from a freezer where its temperature was -10°C.The amount of heat absorbed by the ice as it warms to 0°C is

The Eiffel tower in Paris is made primarily of iron,whose coefficient of linear expansion is about 10 × 10−⁶/°C.On a cold day when the temperature is -10°C the Eiffel tower is 300 meters tall.Its height on a hot day when the temperature is 40°C is