Changes in Matter Review

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

What happens when iron reacts with water and oxygen?

Back

It forms rust, which is a chemical change.

Front

What is melting?

Back

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

Front

What is freezing?

Back

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

Front

What is evaporation?

Back

Evaporation is the process where a liquid turns into a gas at temperatures below its boiling point.

Front

What is condensation?

Back

Condensation is the process where a gas turns into a liquid when cooled.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth.

Front

What effect does temperature have on the state of matter?

Back

Temperature changes can cause matter to change from solid to liquid to gas and vice versa.

Front

What is rust?

Back

Rust is a reddish-brown oxide formed when iron reacts with oxygen and moisture.