Phase Change Amplify - End of Unit Study Guide

Front

What happens to the molecules of a substance when it changes from a gas to a liquid?

Back

The molecules move slower and they move around each other.

Front

How does energy transfer affect the phase change of a substance?

Back

Energy is transferred OUT of the substance for it to change from a gas to a liquid.

Front

What is the effect of energy being transferred INTO a substance?

Back

The molecules of the substance move around each other.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion. It increases when molecules move faster.

Front

What phase change occurs when water changes from solid to liquid?

Back

Melting.

Front

What phase change occurs when water changes from liquid to gas?

Back

Evaporation.

Front

What phase change occurs when water changes from gas to liquid?

Back

Condensation.

Front

What phase change occurs when water changes from liquid to solid?

Back

Freezing.

Front

How do the molecules behave in a solid?

Back

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

Front

How do the molecules behave in a liquid?

Back

Molecules in a liquid are close together but can move around each other.