Matching Pairs Chemical Compounds Matching GameOnline version Test your knowledge of naming chemical compounds with this fun matching pairs game! by Angela 1 Hydrates 2 Naming Prefixes 3 Oxidation States 4 Covalent Compounds 5 Ionic Compounds 6 Polyatomic Ions Ions made of multiple atoms Compounds with water molecules Formed from metal and nonmetal Used for covalent compounds Formed by sharing electrons Charge of an atom in a compound