8.2 Change of State Flashcard

Front

What is sublimation?

Back

Sublimation is the process where a solid changes directly into a gas without becoming a liquid first, such as when ice cubes shrink in a freezer.

Front

Is boiling the reverse of freezing?

Back

False; the reverse of freezing is melting.

Front

What is the boiling point?

Back

The boiling point is the temperature at which a liquid turns into a gas.

Front

How do the speeds of water particles in gas compare to those in liquid water?

Back

Water particles in gas are moving faster than the particles of water in the pan.

Front

Which state of matter has the greatest thermal energy?

Back

A gas has the greatest thermal energy compared to liquids and solids.

Front

What happens to the temperature of a substance during a change of state?

Back

The temperature may remain constant during a change of state, even though heat is being added or removed.

Front

What is condensation?

Back

Condensation is the process where a gas turns into a liquid, such as water vapor turning into dew.

Front

What is freezing?

Back

Freezing is the process where a liquid turns into a solid, such as water turning into ice.

Front

What is evaporation?

Back

Evaporation is the process where a liquid changes into a gas at temperatures below its boiling point.

Front

What is thermal energy?

Back

Thermal energy is the total energy of all the particles in a substance, related to temperature.