Atoms and States of Matter

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are the three states of matter?

Back

Solid, liquid, and gas.

Front

What is a solid?

Back

A solid is a state of matter that has a definite shape and volume.

Front

What is a liquid?

Back

A liquid is a state of matter that has a definite volume but takes the shape of its container.

Front

What is a gas?

Back

A gas is a state of matter that has no definite shape or volume and expands to fill its container.

Front

What happens to particles in a solid?

Back

Particles in a solid are closely packed together and vibrate in place.

Front

What happens to particles in a liquid?

Back

Particles in a liquid are close together but can move past one another, allowing liquids to flow.

Front

What happens to particles in a gas?

Back

Particles in a gas are far apart and move freely, allowing gases to expand.

Front

What is the process of melting?

Back

Melting is the process where a solid turns into a liquid when heated.

Front

What is the process of freezing?

Back

Freezing is the process where a liquid turns into a solid when cooled.