Materials:
* Copper sulfate solution (water and copper sulfate)
* Beaker or evaporating dish
* Heat source (Bunsen burner, hot plate, etc.)
* Watch glass or similar cover (optional)
Procedure:
1. Pour the copper sulfate solution into the beaker or evaporating dish.
2. Gently heat the solution. This will cause the water to evaporate, leaving behind the copper sulfate.
3. Monitor the process. As the water evaporates, the solution will become more concentrated.
4. Continue heating until all the water has evaporated. You will be left with solid copper sulfate crystals at the bottom of the container.
5. (Optional) Cover the container with a watch glass. This will help prevent any copper sulfate from splattering during the evaporation process.
Safety Precautions:
* Wear appropriate safety goggles to protect your eyes.
* Use caution when handling hot equipment and materials.
* Avoid inhaling the vapors that are released during evaporation.
Explanation:
Water has a lower boiling point than copper sulfate. When the solution is heated, the water molecules gain enough energy to overcome their intermolecular forces and escape into the air as water vapor. The copper sulfate remains behind as a solid.
Additional Notes:
* If you want to obtain larger, well-formed copper sulfate crystals, you can slowly cool the solution after most of the water has evaporated. This will give the copper sulfate time to crystallize.
* Evaporation is a common method for separating mixtures where one component is a liquid that evaporates more easily than the other.
