Crystals are made using supersaturated solutions of solids in water. These solutions hold more of the solute than they would at room temperature. How are these solutions made?
1. The water would need to be chilled to a lower temperature, which would give molecules and ions more kinetic energy, increasing solubility.
2. The water would need to be chilled to a lower temperature, which would take kinetic energy away from molecules and ions, increasing solubility.
3. The water would need to be heated to a higher temperature, which would take kinetic energy away from molecules and ions, increasing solubility.
4. The water would need to be heated to a higher temperature, which would give molecules and ions more kinetic energy, increasing solubility.