Understanding Physical Changes

What is a physical change?

• A change that cannot be reversed

• A change that involves a chemical reaction

• A change in size, shape, or state without changing the substance

• A change that creates a new substance

When you melt ice, what type of change is occurring?

• Chemical change

• Physical change

• Irreversible change

• Permanent change

What happens when you mix sugar into water?

• The sugar disappears completely

• The sugar chemically reacts with the water

• The sugar dissolves but can be recovered

• The sugar turns into a new substance

Which of the following is an example of a physical change?

• Baking a cake

• Burning wood

• Rusting iron

• Melting butter

Can all physical changes be reversed?

• No, some physical changes are permanent

• Yes, but only if they involve liquids

• Yes, all physical changes are reversible

• No, only chemical changes can be reversed