Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change that does not cause a new substance to form. Examples include melting, freezing, and breaking.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of a new substance. Examples include burning, rusting, and cooking.

Front

What happens to steel wool when it rusts?

Back

When steel wool rusts, it turns red and brittle.

Front

Where should steel wool be stored to prevent rusting?

Back

Steel wool should be stored in a dry place.

Front

Is freezing juice a physical or chemical change?

Back

Freezing juice is a physical change.

Front

What is an example of a physical change?

Back

An example of a physical change is a glass breaking.

Front

What happens when wood burns?

Back

When wood burns, a chemical change takes place.

Front

What is rust?

Back

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

Front

What is an example of a chemical change?

Back

An example of a chemical change is a candlewick burning.

Front

What is the difference between physical and chemical changes?

Back

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