Phase Changes

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 energy and temperature.

Front

What happens to the energy of a substance during melting?

Back

The substance gains energy as it transitions from solid to liquid.

Front

What is the phase change from liquid to solid called?

Back

Freezing.

Front

What occurs to the particles during freezing?

Back

The particles lose energy and move closer together, forming a solid.

Front

What is condensation?

Back

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

Front

What is vaporization?

Back

Vaporization is the phase change from liquid to gas, where liquid particles gain energy and move apart.

Front

What is sublimation?

Back

Sublimation is the phase change from solid to gas without passing through the liquid state.

Front

What is deposition?

Back

Deposition is the phase change from gas to solid without passing through the liquid state.

Front

What happens to the temperature during a phase change?

Back

The temperature remains constant during a phase change, even though energy is being added or removed.

Front

What is the role of energy in phase changes?

Back

Energy determines the state of matter; gaining energy can cause melting or vaporization, while losing energy can cause freezing or condensation.