Phase Changes

Front

What is the temperature at which a gas condenses to a liquid called?

Back

Condensation point.

Front

What happens to the molecules of a substance when energy is added?

Back

The molecules move faster, leading to phase changes from Solid -> Liquid -> Gas.

Front

What is it called when a solid turns directly into a gas?

Back

Sublimation.

Front

What phase change occurs when a substance is between melting and boiling?

Back

Vaporizing.

Front

What happens to kinetic energy when temperature increases?

Back

Kinetic energy increases.

Front

What is the temperature at which a liquid boils called?

Back

Boiling point.

Front

What is the phase change from liquid to solid called?

Back

Freezing.

Front

What is the phase change from gas to liquid called?

Back

Condensation.

Front

What is the phase change from solid to liquid called?

Back

Melting.

Front

What happens to the speed of molecules when they are heated?

Back

The speed of molecules increases.