8.1.5 Phase Changes

Front

What phase change occurs when a solid turns directly into a gas without becoming a liquid?

Back

Sublimation

Front

What are the two components that make up density?

Back

Mass and Volume

Front

What happens to a substance when energy is removed and it changes from a gas to a liquid?

Back

The substance started as a gas.

Front

What is the process called when water vapor in the air turns into liquid water on a cold surface?

Back

Condensation

Front

What is the relationship between density and buoyancy in liquids?

Back

An object with a lower density than the liquid will float.

Front

What phase change occurs when a liquid turns into a gas?

Back

Vaporization (or evaporation).

Front

What is the term for the temperature at which a substance changes from solid to liquid?

Back

Melting point.

Front

What is the term for the temperature at which a substance changes from liquid to solid?

Back

Freezing point.

Front

What happens to the molecules of a substance during condensation?

Back

The molecules lose energy and come closer together.

Front

What is the phase change called when a gas turns into a liquid?

Back

Condensation.