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, 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 souring.

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 burning wood a physical or chemical change?

Back

Burning wood is a chemical change.

Front

Is milk going sour a physical or chemical change?

Back

Milk going sour is a chemical change.

Front

What is an example of a physical change?

Back

An example of a physical change is a glass breaking.

Front

What is rusting?

Back

Rusting is a chemical change that occurs when iron reacts with oxygen and moisture, forming iron oxide.

Front

What are the signs of a chemical change?

Back

Signs of a chemical change include color change, temperature change, gas production, and the formation of a precipitate.

Front

What is the difference between a physical and chemical change?

Back

A physical change does not create a new substance, while a chemical change does.