Phases and Phase Changes

Front

What happens to atoms when heat energy is added?

Back

Atoms move faster.

Front

What is the shape and volume of gases?

Back

Gases have no definite shape and no definite volume.

Front

What is the phase change from solid to liquid called?

Back

Melting.

Front

Which container has the substance with the lowest amount of energy?

Back

The container on the left.

Front

How do molecules in a liquid move?

Back

Molecules in a liquid flow past each other.

Front

What is the phase change from liquid to solid called?

Back

Freezing.

Front

What is the phase change from gas to liquid called?

Back

Condensation.

Front

What is the phase change from liquid to gas called?

Back

Boiling or evaporation.

Front

What describes the motion of molecules in a solid?

Back

Molecules in a solid vibrate slowly in place.

Front

What is the energy state of particles in a gas compared to solids and liquids?

Back

Particles in a gas have more energy than those in solids and liquids.