ChemCom Elements, Compounds and Mixtures

A substance that contains only one type of atom is a(n)

• compound
• element
• heterogeneous mixture
• homogeneous mixture

The smallest unit of an element that still has the properties of that element is?

• a substance
• a mixture
• a compound
• an atom

Which of these is a pure substance (not a mixture)?

• bread

• table salt

• garden soil

• sea water

Which of these is an example of a molecule?

• a small nugget of pure gold
• the smallest grain of salt in a salt shaker
•  a small drop of sugar water
• two oxygen atoms joined to a carbon atom

Which of these is not an example of a molecule?

• CH4
• C
• C6H12O6
• H2O

Which of these is a mixture?

• Uncooked chocolate chips and cookie dough blended together with a spoon.
• Distilled water
• A nugget of gold
• A molecule of Oxygen

Two or more elements chemically combined:

• an atom
• a compound
• a mixture
• a pure substance

A mixture that appears to be evenly mixed throughout:

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

 mixture that does NOT appear to be evenly mixed throughout:

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

How many Elements are in this compound?
CuSO4

• 3
• 1
• 4
• 5