Phase Changes

Front

What is a phase change?

Back

A phase change is a transition of matter from one state to another, such as solid to liquid or liquid to gas.

Front

What is required for all changes of state of matter?

Back

Energy is required for all changes of state of matter.

Front

What type of change occurs when ice melts into water?

Back

This is a physical change and a phase change.

Front

Why do atoms in a solid vibrate?

Back

Atoms in a solid vibrate because all solids have some thermal energy.

Front

What happens to the temperature of a substance during a phase change?

Back

The temperature of a substance does not change during a phase change.

Front

What is the state of matter with a definite shape and volume?

Back

Solid is the state of matter with a definite shape and volume.

Front

What is the state of matter that has a definite volume but no definite shape?

Back

Liquid is the state of matter that has a definite volume but no definite shape.

Front

What is the state of matter that has neither a definite shape nor a definite volume?

Back

Gas is the state of matter that has neither a definite shape nor a definite volume.

Front

What is melting?

Back

Melting is the process of a solid turning into a liquid when it absorbs heat.

Front

What is freezing?

Back

Freezing is the process of a liquid turning into a solid when it loses heat.