7th Grade Phase Change Review Amplify

Front

What is the term for the way molecules in a substance move around relative to each other?

Back

Freedom of Movement

Front

What happens to the molecules of a substance when energy is transferred out of it during a phase change?

Back

The molecules may slow down and move closer together, leading to a change in phase.

Front

What is the energy that an object has because it is moving called?

Back

Kinetic Energy

Front

What occurs to a substance's molecules when energy is added and it undergoes a phase change?

Back

The molecules will move faster, and the substance may become a liquid or gas.

Front

Are the molecules in a solid always moving?

Back

Yes, the molecules in a solid are always moving, but they vibrate in place.

Front

What is the phase change called when a liquid turns into a gas?

Back

Vaporization.

Front

What is the phase change called when a gas turns into a liquid?

Back

Condensation.

Front

What is the phase change called when a solid turns into a liquid?

Back

Melting.

Front

What is the phase change called when a liquid turns into a solid?

Back

Freezing.

Front

What happens to the kinetic energy of molecules as a substance changes from a solid to a liquid?

Back

The kinetic energy increases.