Phase Change and Particle Motion

Front

What is a phase change?

Back

A phase change is a transition of matter from one state (solid, liquid, gas) to another due to changes in temperature or pressure.

Front

What are the three main states of matter?

Back

The three main states of matter are solid, liquid, and gas.

Front

What is the boiling point of water?

Back

The boiling point of water is 100°C (212°F) at standard atmospheric pressure.

Front

What is the freezing point of water?

Back

The freezing point of water is 0°C (32°F) at standard atmospheric pressure.

Front

What happens to molecules during melting?

Back

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

Front

What happens to molecules during freezing?

Back

During freezing, molecules lose energy and come closer together, transitioning from a liquid to a solid.

Front

What is evaporation?

Back

Evaporation is the process where liquid turns into gas, usually occurring at the surface of the liquid.

Front

What is condensation?

Back

Condensation is the process where gas turns into liquid, often seen as droplets on a cold surface.

Front

What is sublimation?

Back

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

Front

What is deposition?

Back

Deposition is the process where gas turns directly into solid without becoming a liquid first.