Lesson 2 Phase Changes

What is the process of a solid turning into a liquid called?

• Condensation

• Freezing

• Melting

• Sublimation

What happens to the temperature of a substance during melting?

• It increases.

• It decreases.

• It remains constant.

• It fluctuates.

The process of a gas changing into a liquid is known as:

• Sublimation

• Deposition

• Condensation

• Evaporation

Which of the following is an example of sublimation?

• Melting ice

• Boiling water

• Dry ice turning into gas

• Freezing water

What phase change occurs when frost forms on a cold surface?

• Evaporation

• Deposition

• Melting

• Sublimation

The process of a liquid becoming a gas is called:

• Freezing

• Evaporation

• Deposition

• Condensation

Which phase change involves heat being released by a substance?

• Melting

• Evaporation

• Freezing

• Sublimation

At what point does water boil under normal atmospheric pressure?

• 0°C

• 50°C

• 100°C

• 200°C

Which process directly converts a gas into a solid?

• Freezing

• Condensation

• Deposition

• Sublimation

Which phase change occurs when water vapor cools and forms dew on grass?

• Melting

• Condensation

• Sublimation

• Deposition