How do we know what is saturated, unsaturated and supersaturated?

Answer 1

Is it like this? When the point is down of the point it is unsaturated, in the point saturated and above the point supersaturated?

Answer 2

I don't know what you mean by point.
Saturated means no more can dissolve under normal conditions, unsaturated means more can dissolve, supersaturated (as silly as it sounds) means it has dissolved more than is normally possible, the solution is not at equilibrium, and, given the opportunity, the excess will crystallize back to a saturated solution.

Answer 3

yes thank yew finally an answer!