AnswersWI-Physics BChanges of State

Changes of State Answers

9 verified answers
1
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heat and densitymass and temperaturetemperature and heatmass and density

A
heat and density
B
mass and temperature
C
temperature and heat
D
mass and density
3
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Which best compares freezing and condensation?

A
Both involve changes between liquids and gases.
B
Both involve changes between gases and solids.
C
Both involve the release of heat.
D
Both involve the absorption of heat.
4

How much heat is released when 12.0 grams of helium gas condense at 2.17 K? The latent heat of vaporization of helium is 21 J/g.

A
–250 J
B
–26 J
C
26 J
D
250 J
5

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

A
an upward sloping line
B
a downward sloping line
C
a horizontal line
D
a curved line
6

The diagram shows a heating curve for a substance that begins as a solid.

Question illustration
A
0
B
1
C
2
D
3
7

How much heat is released when 25.0 grams of liquid copper at its freezing point of 1,085°C changes to solid? The latent heat of fusion of copper is 205.0 J/g.

A
–27,130 J
B
–5,130 J
C
5,130 J
D
27,130 J
8

What change of state occurs during vaporization?

A
liquid to gas
B
gas to liquid
C
solid to liquid
D
liquid to solid
9

Andre heated several solid crystals of a substance called iodine, and the iodine changed directly to a gas. The iodine gas then cooled and changed into droplets.

A
condensation, then vaporization
B
sublimation, then condensation
C
deposition, then sublimation
D
vaporization, then deposition
10

Which changes of state occur between solids and gases? Check all that apply.vaporizationdepositionfreezingmeltingsublimation

A
vaporization
B
deposition
C
freezing
D
melting
E
sublimation

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