How do you identify insoluble and soluble solutions?

Answer 1

This question needs to reworded, it makes no sense as written. Perhaps the question is supposed to be "how do you identify soluble and insoluble salts"?

Answer 2

Insoluble solutions form a precipitate when two solutions are mixed, while soluble solutions do not form a precipitate. For example, mixing silver nitrate with sodium chloride forms a white precipitate which indicates insolubility, while mixing sodium chloride with water forms a clear solution which indicates solubility. Additionally, solubility charts can also be used to determine if a compound is soluble or insoluble in water.