1G Physical and Chemical change H.W.

Front

What is a physical change?

Back

A physical change is when matter changes size, shape, or form without changing its chemical composition.

Front

What is a chemical change?

Back

A chemical change is when matter changes into a different substance with different properties.

Front

Give an example of a physical change.

Back

An example of a physical change is melting ice.

Front

Give an example of a chemical change.

Back

An example of a chemical change is rust forming on metal.

Front

What happens to sugar when it melts?

Back

When sugar melts, it undergoes a physical change.

Front

What happens to milk when it goes sour?

Back

When milk goes sour, it undergoes a chemical change.

Front

Is cutting paper a physical or chemical change?

Back

Cutting paper is a physical change.

Front

Is baking a cake a physical or chemical change?

Back

Baking a cake is a chemical change.

Front

What is the main difference between physical and chemical changes?

Back

The main difference is that physical changes do not create new substances, while chemical changes do.

Front

Can a physical change be reversed?

Back

Yes, many physical changes can be reversed, like freezing and melting water.