Latent Heat

The diagram shows a heating curve for ice. Which line represents the ice melting?

• A

• B

• C

• D

• E

During which phase change does water absorb the most heat?

• freezing

• melting

• condensation

• evaporation

During which phase change of water is the most energy released

into the environment?

• water freezing

• ice melting

• water evaporating

• water vapor condensing

During which phase change does water release the most heat energy?

• freezing

• melting

• condensation

• vaporization

Which diagram correctly shows the processes that change the states of matter?

• 
• 
• 
• 

What energy exchange occurs when liquid water at 0°C turns to ice at 0°C?

• The water loses energy.

• The air around the water loses energy.

• The ice gains energy.

• The air and the water both gain energy.

As heat energy is added to an open container of boiling water, the temperature of the boiling water will

• decrease

• increase

• remain the same

When 1 gram of liquid water at 0° Celsius freezes to form ice, how many total Joules of heat are lost by the water?

• 4.18

• 2.11

• 334

• 2260

How many Joules of heat energy would be required to melt a 5-gram piece of ice at 0ºC?

• 10.5 J

• 334 J

• 1670 J

• 11500 J

Water loses energy when it changes phase from

• liquid to solid

• liquid to gas

• solid to liquid

• solid to gas