7th Grade Phase Change Review Amplify

Front

What is a phase change?

Back

A phase change is a noticeable different form or state of the same substance, such as solid, liquid, or gas.

Front

What happens to molecules during a phase change from liquid to solid?

Back

The molecules lose energy, move closer together, and their movement slows down, resulting in a solid.

Front

What is molecular attraction?

Back

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

Front

Define kinetic energy.

Back

Kinetic energy is the energy that an object has because it is moving.

Front

What is freedom of movement in the context of molecules?

Back

Freedom of movement refers to the way molecules in a substance move around relative to each other.

Front

What occurs during the melting phase change?

Back

During melting, a solid absorbs energy, causing its molecules to move faster and break free from their fixed positions.

Front

What is the boiling point?

Back

The boiling point is the temperature at which a liquid changes to a gas.

Front

How does temperature affect phase changes?

Back

Temperature affects phase changes by providing or removing energy, which influences molecular movement and attraction.

Front

What is condensation?

Back

Condensation is the phase change from gas to liquid, occurring when gas molecules lose energy and come closer together.

Front

What is sublimation?

Back

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