Phase Changes of Matter

Front

What is a phase change?

Back

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

Front

What happens to the particles in a solid during melting?

Back

The particles gain energy, move apart, and transition into a liquid state.

Front

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

Back

Evaporation.

Front

What is the melting point?

Back

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

Front

What is the principle of conservation of mass?

Back

Matter cannot be created or destroyed in a chemical reaction or physical change.

Front

What are the three main states of matter?

Back

Solid, liquid, and gas.

Front

What occurs during condensation?

Back

Gas particles lose energy and transition into a liquid state.

Front

What is sublimation?

Back

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

Front

What is freezing?

Back

Freezing is the process where a liquid turns into a solid as it loses energy.

Front

How do particles behave in a gas?

Back

Particles in a gas are far apart, move freely, and have weak attractive forces.