| Soluble | Insoluble |
|---|---|
| [Group 1]? and NH4+? compounds | carbonates? (except [Group 1]? and NH4+? compounds) |
| nitrates? | sulfites? (except [Group 1]? and [NH4+ compounds]?) |
| acetates? (ethanoates) | phosphates? (except [Group 1]? and NH4+? compounds) |
| chlorides?, bromides? and iodides? (except Ag+?, Pb2+?, Cu+? and Hg22+?) | hydroxides? and oxides? (except [Group 1]?, NH4+?, Ba2+?, Sr2+? and Ca2+?) |
| sulfates? (except Ag+?, Pb2+?, Ba2+?, Sr2+? and Ca2+?) | sulfides? (except [Group 1]?, [Group 2]? and NH4+? compounds) |