Chem Review

The basic unit of matter is

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

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

• compound
• element
• heterogeneous mixture
• homogeneous mixture

Atoms of an element always have a certain number of

• neutrons
• protons
• electrons
• ions

Two or more elements chemically combined:

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

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

M&M's is an examples of a

• homogeneous mixture
• heterogeneous mixture

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6

which one can be found on the periodic table

• Compound 
• Element

Is salt (NaCI) a compound or a element

• Compound
• element