Nitrates and acetates melt into water.
Sulfates and chlorides dissolve as they oughtta.
Sulfates and chlorides of silver and lead:
These are exceptions that stick in your head.
Calcium sulfate and calcium oxide,
Fall to the bottom just like the hydroxide.
Maybe a little bit starts to dissolve;
Sparingly soluble salts they are called.
Po-tas-si-um,
Am-mon-i-um,
And So-di-um too,
Make soluble compounds with everything;
The rest don't dissolve; we're through.