Identifying Physical and Chemical Changes

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. Examples include melting, freezing, and bending.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and changes the chemical composition of the substance. Examples include burning, rusting, and rotting.

Front

Is melting ice a physical or chemical change?

Back

Melting ice is a physical change.

Front

Is burning wood a physical or chemical change?

Back

Burning wood is a chemical change.

Front

Is fruit rotting a physical or chemical change?

Back

Fruit rotting is a chemical change.

Front

Is bending metal a physical or chemical change?

Back

Bending metal is a physical change.

Front

Is breaking glass a physical or chemical change?

Back

Breaking glass is a physical change.

Front

What happens to the chemical composition during a physical change?

Back

The chemical composition remains the same during a physical change.

Front

What happens to the chemical composition during a chemical change?

Back

The chemical composition changes during a chemical change, resulting in new substances.

Front

Can physical changes be reversed?

Back

Many physical changes can be reversed, such as freezing and melting.