A supersaturated solution is one where more solute is dissolved than would normally be possible under normal conditions. It's unstable and can often lead to rapid precipitation of the solute when disturbed.
A chemical reaction where an insoluble solid (precipitate) forms and separates from the liquid mixture.
Solubility Equilibrium: The equilibrium between an undissolved solute and an ionic compound in a saturated solution.
Crystallization Process: The process by which crystals form from a supersaturated solution when it cools or evaporates.