7th Grade Phase Change Ch 1&2 Amplify

Front

What happens to the molecules of a substance when energy is added and it undergoes a phase change?

Back

The molecules move faster, and the substance may change from solid to liquid or liquid to gas.

Front

Describe the movement of molecules in a liquid compared to a gas.

Back

In a liquid, molecules move around each other; in a gas, molecules move away from each other.

Front

What is the phase change from liquid to solid called?

Back

Freezing.

Front

What is the phase change from solid to liquid called?

Back

Melting.

Front

What is the phase change from liquid to gas called?

Back

Vaporization.

Front

What is the phase change from gas to liquid called?

Back

Condensation.

Front

How do the molecules behave in a solid?

Back

Molecules in a solid are closely packed and move in place.

Front

What does it mean to 'refute' a claim?

Back

To provide evidence that goes against a claim.

Front

What happens to water molecules when water freezes?

Back

The molecules move from moving around each other to moving in place.

Front

What is the relationship between temperature and the energy of molecules during a phase change?

Back

As temperature increases, the energy of the molecules increases, leading to faster movement.