Explain the significance of crystallization in the purification of substances. Discuss how impure salt obtained from seawater can be purified through crystallization, emphasizing the separation of pure crystals from impurities based on their solubility differences.
1
Crystallization is a physical change that does not result in pure substances
2
Crystallization cannot separate substances based on solubility
3
Crystallization is an effective method to purify substances, producing crystals that are purer than the original material
4
All solids can be purified equally well by crystallization