Chemical and Physical Change

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as the ability to rust.

Front

What is a physical property?

Back

A characteristic of a substance that can be observed without changing its chemical identity, such as size or color.

Front

What is a chemical change?

Back

A change that results in the formation of one or more new substances, such as burning wood.

Front

What is a physical change?

Back

A change that does not result in a new substance, such as melting ice.

Front

Give an example of a chemical change.

Back

Burning paper.

Front

Give an example of a physical change.

Back

Dissolving sugar in water.

Front

What happens to the molecules during a chemical change?

Back

The molecules rearrange to form new substances.

Front

What happens to the molecules during a physical change?

Back

The molecules may change their state or appearance but remain the same substance.

Front

Is boiling water a chemical or physical change?

Back

Physical change.

Front

Is rusting of iron a chemical or physical change?

Back

Chemical change.