Answer the following questions:
Divya dissolved excess copper sulphate in hot water and filtered the solution. The filtrate was then allowed to cool slowly. After some time, blue crystals of copper sulphate were formed.
1. Which property of copper sulphate is responsible for crystal formation?
2. What is likely to happen if the solution is cooled rapidly instead of slowly?
3. How can the student obtain copper sulphate crystals from the unsaturated solution?