This occurs when two or more molecules combine to form a new molecule

• Physical reaction
• Chemical reaction
• Pure substance

This does not change the substance into anything new

• Physical change
• Chemical change
• Burning

Iron rusting is a _________ change.

• chemical
• physical

Tearing paper is a _________ change

• chemical
• physical

Eggs cooking is a _________ change

• chemical
• physical

Sugar dissolving is a __________ change.

• chemical
• physical

Wood burning is a _____________ change.

• chemical
• physical

Boiling water is a __________ change.

• chemical
• physical

Unexpected color change is a __________ change.

• chemical
• physical

Spoiled milk is a ________ change.

• chemical
• physical