7th Grade Phase Change Review Amplify

Front

What is a phase?

Back

A noticeably different form or state of the same substance.

Front

What happens to molecules in a solid when energy is added?

Back

The molecules move around each other.

Front

What is molecular attraction?

Back

A pull between two molecules that is always the same for a substance.

Front

What is kinetic energy?

Back

The energy that an object has because it is moving.

Front

What does it mean to refute a claim?

Back

To provide evidence that goes against a claim.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is the difference between a solid, liquid, and gas?

Back

Solids have a fixed shape, liquids take the shape of their container, and gases fill the entire space available.

Front

What is thermal energy?

Back

The total energy of all the particles in a substance, related to temperature.

Front

What is the process of melting?

Back

The change from a solid to a liquid when heat is added.

Front

What is freezing?

Back

The change from a liquid to a solid when heat is removed.