In water,

1. All family IA and NH compounds are soluble.
2. All common acetates, chlorates, and nitrates are soluble.
3. All common chlorides are soluble except Ag⁺, Hg, Pb⁺² (PbCl₂ is soluble in hot water).
4. All common sulfates are soluble except Ba⁺², Ca⁺², Hg⁺², Pb⁺², and Sr⁺².
5. All common carbonates, phosphates, and silicates are insoluble except family IA and NH compounds.
6. All common sulfides are insoluble except family IA and IIA and NH compound.