Unit 1 Review

A substance that can be observed without changing the identity of the substance is called

• molecule

• chemical property

• physical property

All matter is made up small particles called

• molecules
• cells
• atoms

A chemical change happens when

• the physical state of a substance changes.
• elements or compounds combine to form a new substance.

• the color of a substance changes.

A change in matter that does not form a new substance is

• physical change

• chemical change

• physical property

A physical blend of 2 or more components is called a ____.

• type of element

• mixture

• chemical reaction

• physical property

What type of material is pictured?

• Element

• Compound

• Homogeneous mixture

• Heterogeneous mixture

What type of material is pictured?

• Element

• Compound

• Heterogeneous mixture

• Homogeneous mixture

A type of substance containing atoms of two or more elements chemically bonded together is a mixture.

• Ture
• False

Pure oxygen (O) is an example of...

• an element
• a mixture
• a compound

An example of ...

• A mixture
• A compound
• An element