Use the periodic table to complete these charts.
Complete the following charts by counting the atoms in the compounds.

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Sodium Oxide - Na2O

Type of atom:
# of atoms:

Total:

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Calcium Chloride - CaCl2

Type of atom:
# of atoms:

Total:

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Potassium Sulphate K2SO4

Type of atom:
# of atoms:

Total:

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Aluminum Iodide - AlI3

Type of atom:
# of atoms:

Total:

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NH 4C2 H3O2

Type of atom:
# of atoms:

Total:

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2(NH4)2CO3

Type of atom:
# of atoms:

Total:

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Pb(NO3)4

Type of atom:
# of atoms:


Total:

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3(PO4)2

Type of atom:
# of atoms:

Total:


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