Chemical & Physical Changes

A process where one or more substances are transformed into new substances with different properties.

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

New substance is formed.

Iron reacts with oxygen and moisture to form iron oxide, a new substance.

Properties that can only be observed when a substance undergoes a chemical change.

Melting ice into water.

Burning wood.

The gradual destruction of materials, often metals, due to chemical reactions with their environment.

A chemical change results in the formation of new substances, while a physical change does not.

Mold growing on cheese.