Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change that does not create a new substance. Examples include melting ice or breaking a glass.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of a new substance. Examples include cooking food or rusting metal.

Front

Give an example of a chemical change.

Back

Cooking eggs for breakfast is an example of a chemical change.

Front

What happens to steel wool when it rusts?

Back

When steel wool rusts, it turns red and brittle.

Front

What is rust?

Back

Rust is a reddish-brown substance that forms when iron reacts with oxygen and moisture.

Front

Is spoiling food a physical or chemical change?

Back

Spoiling food is a chemical change.

Front

What is an example of a physical change?

Back

A glass breaking is an example of a physical change.

Front

Where should steel wool be stored to prevent rusting?

Back

Steel wool should be stored in a dry place to prevent rusting.

Front

What is the difference between physical and chemical changes?

Back

Physical changes do not create new substances, while chemical changes do.

Front

What is an example of a physical change involving water?

Back

Melting ice is an example of a physical change involving water.