Unit 1.2-3 Physical vs Chemical Changes

an example of a physical change

• flammability

• fireworks exploding

• rust

• melting

Cutting your hair is an example of a ___________ change.

• physical

• chemical

A new substance is formed in a physical change.

• true

• false

This is an example of a _______ change.

• physical

• chemical

Which of the following is evidence of a physical change?

• New substance

• Shape Change

• Light produced

• Gas released.

Hydrochloric acid reacts with potassium hydroxide to produce a salt, water,and heat.

• Chemical Change

• Physical Change

Which of the following examples represents a physical change?

• 
• 
• 
• 

A teacher is demonstrating physical and chemical changes to her class. Which action should they use to demonstrate a chemical change?

• Cutting a piece of paper with scissors.

• Folding a piece of paper into an airplane.

• Ripping a piece of paper with their hands.

• Burning a piece of paper with a match.

Which example best illustrates a physical change?

• iron rusting

• charcoal burning

• an ice cube melting

• a marshmallow burning

Baking soda and vinegar combining to make carbon dioxide is a

• Chemical Change

• Physical Change