When you add so much solute that no more dissolves, you have a saturated solution.

Here's why:

* Solute: The substance being dissolved (e.g., sugar, salt).

* Solvent: The substance doing the dissolving (e.g., water).

* Solution: A homogeneous mixture of solute and solvent.

In a saturated solution, the solvent has reached its maximum capacity to hold the solute at a given temperature. Any additional solute added will simply settle at the bottom, not dissolving.