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Question 1 of 6
1 of 6

Match the following key terms to the correct definition.

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Simplest whole number ratio of atoms of each element in a compound.
Shows the actual number of atoms of each element in a compound.
Ions made of more than one type of atom.
Name ending for a compound with a metal and singular non–metal.
Name ending for a compound with 3 or more elements, one being oxygen.
empirical formula
molecular formula
polyatomic ions
–ide compounds
–ate compounds
Ionic compounds do not form molecules so their formulae tell us the ratio of atoms, rather than the number of each atom. The prefix poly– means many and the compounds KCl and CuSO₄ are called potassium chloride and copper sulfate respectively.