1.3 Chemical/Physical Changes and Properties

Front

What is a chemical change?

Back

A chemical change occurs when two or more substances combine to make a new chemical substance.

Front

True or false: Some physical changes involve chemical reactions.

Back

False

Front

Which of the following indicates a PHYSICAL change?

Back

Change in shape.

Front

Physical changes can be brought about by:

Back

Cutting, Bending, Dissolving, All of the following are correct.

Front

A change in matter that forms one or more new substances with new chemical properties is a/an...

Back

Chemical Change.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Examples of physical changes include:

Back

Melting, freezing, dissolving, and breaking.

Front

What is the difference between a chemical change and a physical change?

Back

A chemical change results in the formation of new substances, while a physical change does not.

Front

What is an indicator of a chemical change?

Back

Indicators include color change, temperature change, gas production, and formation of a precipitate.

Front

What happens to the chemical properties of a substance during a chemical change?

Back

The chemical properties change because new substances are formed.