Phase Changes

Front

What is a phase change?

Back

A phase change is a transition of matter from one state to another, such as solid, liquid, or gas.

Front

What happens to molecules during melting?

Back

During melting, molecules gain energy and move faster, transitioning from a solid to a liquid.

Front

What is condensation?

Back

Condensation is the phase change from a gas to a liquid, where molecules lose energy and come closer together.

Front

What is sublimation?

Back

Sublimation is the phase change where a solid turns directly into a gas without becoming a liquid first.

Front

What is freezing?

Back

Freezing is the phase change from a liquid to a solid, where molecules lose energy and move closer together.

Front

Describe the movement of particles in a solid.

Back

In a solid, particles vibrate in place and are closely packed together.

Front

What is evaporation?

Back

Evaporation is the phase change from a liquid to a gas, occurring at the surface of the liquid.

Front

What is boiling?

Back

Boiling is the rapid phase change from a liquid to a gas that occurs throughout the liquid at a specific temperature.

Front

What is the melting point?

Back

The melting point is the temperature at which a solid becomes a liquid.

Front

What is the boiling point?

Back

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