Objective: To determine how temperature affects the rate at which a solid dissolves in a liquid.
Materials:
* 2 clear glass beakers
* Hot water
* Cold water
* Sugar
* Stopwatch
* Spoon
* Paper towels
Procedure:
1. Fill one beaker with hot water and the other beaker with cold water.
2. Add 1 tablespoon of sugar to each beaker.
3. Start the stopwatch and stir the sugar until it is completely dissolved.
4. Record the time it took for the sugar to dissolve in each beaker.
5. Repeat steps 2-4 with different amounts of sugar (2 tablespoons, 3 tablespoons, etc.).
Expected Results:
The sugar will dissolve faster in the hot water than in the cold water. This is because the hot water molecules have more energy than the cold water molecules, so they can break apart the sugar crystals more quickly.
Conclusion:
The rate at which a solid dissolves in a liquid is affected by temperature. The higher the temperature, the faster the solid will dissolve.
Extension:
* Investigate the effect of other factors on the rate of dissolving, such as the type of solid, the size of the solid particles, and the amount of liquid.
* Design an experiment to test the effect of temperature on the rate of dissolving of different types of solids.