Physical vs. Chemical Changes

Front

What is a chemical change?

Back

A change in which new substances are formed.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without changing its identity.

Front

Give an example of a chemical change.

Back

Burning wood.

Front

Give an example of a physical change.

Back

Breaking a pencil.

Front

What happens to a substance during a physical change?

Back

Some physical properties change, but the substance keeps its identity.

Front

What happens during a chemical change?

Back

The original substances are transformed into new substances.

Front

Is rusting of iron a chemical change or a physical change?

Back

Chemical change.

Front

Is melting ice a chemical change or a physical change?

Back

Physical change.

Front

What can you infer about the changes that formed the Grand Canyon?

Back

They were physical changes.

Front

What is an example of a process that is NOT a chemical change?

Back

Breaking a pencil.