Unit 1 - Matter Practice Test

A mixture of water and sand, will this be a heterogeneous mixture or a homogeneous mixture?

• heterogeneous

• homogeneous

• neither

A helium ballon is a pure substance, but will it be categorized as an compound or an element?

• compound

• element

• neither

Is burning wood a physical or chemical change?

• Physical Change

• Chemical Change

Which is not an example of an element?

• Helium gas

• iron metal

• water

• mercury

A chemical change is a process is most likely a _______________ process.

• reversible

• non-reversible

Is bending a metal rod a physical or chemical change?

• physical change

• chemical change

Chemical change is a change of matter from one form to another WITHOUT a change in chemical properties.

• True

• False

A mixture that appears to be evenly mixed throughout:

• an atom
• a compound
• a homogeneous mixture
• a heterogeneous mixture

A pure substance...

• is an element or a compound
• is an element or a mixture
• is a compound or a mixture
• is a mixture

1 A substance made up of two or more chemically combinedelements is —

• an element
• mixture
• compound
• solution