Standard 3af and 7b – Atom Unit Test Review
(Multiple Choice = 50 points, Chart/Drawing = 30 points, Total = 80 points
What is a compound?____________________________________________________________________
What is an isotope?______________________________________________________________________
Complete the following charts
Particle
Charge
Positive
Location
Mass
Electron
Atom
Atomic
Number
Mass
Number
Protons
Neutrons
Electrons
Oxygen-16
Oxygen-18
Using the information above, draw the atoms in
the box to the right. Include:
 Label the “Nucleus”
 In a Key Label Correct Number of
“Proton”, “Neutrons” and “Electrons”
 Place the Correct Number of Protons,
Neutrons, and Electrons
 Label “Electron Levels”
Formula
(i.e. CO2)
Element(s)
(C=Carbon, O=Oxygen)
Oxygen-16
# of Atoms
(C = 1 atom, O = 2 atoms)
Total # of
atoms
(3 atoms)
NaNO3
NH4NO3
Fe2(SO3)3
Substances
Vinegar (C2H4O2)
Gallium (Ga)
Cereal and milk
Strontium Fluoride (SrF2)
Black Ink
Krypton (Kr)
Element, Compound, or
Mixture
Why? (explain your reasoning)