Question

When you are dissolving sugar in your coffee, the last spoonful of sugar won't dissolve no matter how much you stir. What type of solution have you made?

A colloid solution
An emulsion solution
A saturated solution
A supersaturated solution

Answer 1

The situation described, where the last spoonful of sugar won't dissolve in your coffee regardless of how much you stir, indicates that you have created a **saturated solution**. In a saturated solution, the solvent (in this case, coffee) has dissolved the maximum amount of solute (sugar) possible at that temperature and pressure. Any additional solute added will not dissolve.