Physical and Chemical Changes

Front

What is a physical change?

Back

A change that does not create a new substance; only the form or appearance changes.

Front

What is a chemical change?

Back

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

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

What happens to the molecules during a physical change?

Back

The molecules rearrange but do not change their chemical structure.

Front

What happens to the molecules during a chemical change?

Back

The molecules break apart and form new substances with different properties.

Front

Can physical changes be reversed?

Back

Yes, most physical changes can be reversed.

Front

Can chemical changes be reversed?

Back

No, chemical changes usually cannot be reversed.

Front

What is an example of a permanent chemical change?

Back

Rusting of iron.

Front

What is an example of a temporary physical change?

Back

Melting of ice.