Changes of States

Front

What are the three states of matter?

Back

Solid, Liquid, Gas

Front

What happens to particles in a substance when it gets colder?

Back

The particles move slower.

Front

What happens to particles in a substance when the temperature increases?

Back

The particles speed up and move farther apart.

Front

How is a gas defined?

Back

Indefinite shape and indefinite volume.

Front

What is required for all phase changes (changing states)?

Back

Energy must be added or taken away.

Front

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

Back

Solid.

Front

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

Back

Liquid.

Front

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

Back

Gas.

Front

What happens to the energy of particles when a substance freezes?

Back

Energy is taken away.

Front

What happens to the energy of particles when a substance melts?

Back

Energy is added.