Here's why:
* Saturated Solution: A saturated solution is one where no more solute can dissolve at a given temperature and pressure. The solution is in equilibrium, with the rate of dissolution of the solid equal to the rate of crystallization.
* Solubility: The maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature is called its solubility.
* Supersaturated Solution: If you somehow manage to dissolve more solute than the solubility limit, you have a supersaturated solution. This is usually unstable and any slight disturbance can cause the excess solute to crystallize out.
In simpler terms: Imagine trying to put sugar in a glass of water. At first, the sugar dissolves easily. But eventually, no matter how much more you add, the sugar just sits at the bottom because the water can't hold any more. That's a saturated solution!