Phase Changes

Front

What is the process called when a solid changes directly to a gas without becoming a liquid?

Back

Sublimation

Front

What is the term for the change of one state of matter to another?

Back

Phase Change

Front

What do we call the temperature at which a gas turns into a liquid?

Back

Condensation Point

Front

What is the process called when a liquid turns into a solid?

Back

Freezing

Front

What is the temperature at which a solid becomes a liquid?

Back

Melting Point

Front

What is the process called when a liquid changes into a gas?

Back

Evaporation

Front

What is the temperature at which a liquid boils and turns into a gas?

Back

Boiling Point

Front

What is the term for the process of a gas turning into a liquid?

Back

Condensation

Front

What happens to the molecules of a substance during melting?

Back

They gain energy and move apart.

Front

What happens to the molecules of a substance during freezing?

Back

They lose energy and come closer together.