Introduction:
A saturated solution of potassium chloride refers to a solution in which the maximum amount of solute (potassium chloride) has been dissolved in a given amount of solvent (water) at a specific temperature (60 degrees Celsius). When this solution is allowed to cool to room temperature (around 25 degrees Celsius), several changes occur due to the change in temperature. Let's discuss these changes in detail.

Changes that occur:
1. Decrease in solubility: As the saturated solution of potassium chloride cools, the solubility of the compound decreases. This means that the solution can no longer hold the same amount of solute at lower temperatures.

2. Crystallization: The decrease in solubility leads to the formation of crystals of potassium chloride. These crystals are visible and can be observed in the solution as it cools down. The excess solute that cannot be dissolved precipitates out of the solution in the form of crystals.

3. Equilibrium: When the solution is saturated, a dynamic equilibrium exists between the dissolved ions and the undissolved solid. As the solution cools, the equilibrium shifts towards the formation of more solid potassium chloride crystals. This occurs because the concentration of dissolved ions decreases as the solution cools, leading to the precipitation of solid.

4. Separation: The formation of crystals causes the potassium chloride to separate from the solution. The crystals can be seen settling at the bottom of the container or adhering to the sides. This separation can be observed visually.

5. Change in concentration: As the crystals form and separate from the solution, the concentration of potassium chloride in the remaining solution decreases. The solution becomes less concentrated as more solute is removed from the liquid phase.

Conclusion:
In conclusion, when a saturated solution of potassium chloride prepared at 60 degrees Celsius is allowed to cool to room temperature, the solubility of the compound decreases, causing the formation and separation of potassium chloride crystals. This leads to a decrease in the concentration of the solution and the visual observation of crystals settling or adhering to the container.