Physical Science Review

Front

What is the definition of a gas?

Back

A gas is defined as a state of matter that has no shape and no volume.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

What is a chemical change?

Back

A chemical change is a change in matter that forms one or more new substances with new chemical properties.

Front

What flows in a wire to create electricity?

Back

Electrons flow in a wire to create electricity.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

Can gases be compressed?

Back

Yes, gases can be compressed because they have no fixed volume.

Front

What happens to the particles in a gas when heated?

Back

When a gas is heated, its particles move faster and spread apart, increasing the gas's volume.

Front

What is the relationship between temperature and the state of matter?

Back

Temperature affects the state of matter; increasing temperature can change solids to liquids (melting) and liquids to gases (evaporation).

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.

Front

What is the significance of bubbles in a liquid?

Back

Bubbles in a liquid often indicate the presence of a gas.