Phases and Phase Changes

Front

What are the two phase changes that require heat energy to be absorbed?

Back

Melting and boiling.

Front

What happens to the atoms when heat energy is added?

Back

The atoms move faster.

Front

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

Back

The container on the left.

Front

What phase change does water leaving the ocean in the water cycle represent?

Back

Evaporation.

Front

What is the phase of matter with a definite volume but no definite shape?

Back

Liquid.

Front

What is melting?

Back

The process of a solid turning into a liquid when heat is added.

Front

What is boiling?

Back

The process of a liquid turning into a gas when heat is added.

Front

What is condensation?

Back

The process of a gas turning into a liquid when heat is removed.

Front

What is freezing?

Back

The process of a liquid turning into a solid when heat is removed.

Front

What is the phase of matter that has no definite shape and no definite volume?

Back

Gas.