Front

What is the phase change of a solid to a liquid?

Back

Melting

Front

How do particles behave in a liquid?

Back

They are free to move around one another but still touch.

Front

What happens to a solid when it turns into a gas?

Back

Adding thermal energy.

Front

What state of matter has particles that are far apart and move freely?

Back

Gas

Front

When the temperature of matter increases, what happens to the particles?

Back

They speed up and move farther apart.

Front

What is the phase change of a liquid to a solid?

Back

Freezing

Front

What is the phase change of a gas to a liquid?

Back

Condensation

Front

What is the phase change of a liquid to a gas?

Back

Boiling or evaporation.

Front

What happens to the energy of particles when they freeze?

Back

They lose thermal energy.

Front

What is the term for the amount of energy needed to change a substance from solid to liquid?

Back

Heat of fusion.