Physical and Chemical Changes

Front

What is a chemical change?

Back

A chemical change creates a new substance and cannot be undone.

Front

What is a physical change?

Back

A physical change alters the physical properties of an object but does not create a new substance.

Front

Is melting ice a physical or chemical change?

Back

Physical change.

Front

Is burning wood a physical or chemical change?

Back

Chemical change.

Front

Is rusting of iron a physical or chemical change?

Back

Chemical change.

Front

Is dissolving sugar in water a physical or chemical change?

Back

Physical change.

Front

What happens to the molecules during a chemical change?

Back

The molecules rearrange to form new substances.

Front

Can a chemical change be reversed?

Back

No, a chemical change cannot be reversed.

Front

Can a physical change be reversed?

Back

Yes, a physical change can often be reversed.

Front

What is an example of a physical change?

Back

Freezing water into ice.