AnswersPhysicsChanges of State

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Which feature of a heating curve indicates a change of state?

A
a horizontal line
B
a curved line
C
an upward sloping line
D
a downward sloping line
3

In the formulas for latent heat of fusion and latent heat of vaporization, what does Q represent?

A
the amount of a substance that changes state
B
the mass of a substance
C
the amount of heat released or absorbed by a substance
D
the temperature of a substance
4

Latent heat of fusion refers to which changes of state?

A
gas to liquid or liquid to gas
B
solid to liquid or liquid to solid
C
solid to gas or gas to liquid
D
liquid to solid or solid to gas
5

Which best compares freezing and condensation?

A
Both involve the release of heat.
B
Both involve the absorption of heat.
C
Both involve changes between gases and solids.
D
Both involve changes between liquids and gases.
9

Latent heat of vaporization refers to which changes of state?

A
solid to liquid or gas to liquid
B
liquid to gas or gas to liquid
C
gas to liquid or liquid to solid
D
solid to gas or gas to solid

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