Define Crystallization
Cystallization is a process in which pure substances are formed in the form of crystals. It is the technique to separate a solid crystal from a liquid solution. In this process, dissolved substances called solutes separate from the solution in the form of well-shaped crystals, and impure substances remain in the solution.
Cystallization is widely used in laboratories, industries, and day-to-day life. It is one of the best purification methods in chemistry.
According to class 7, the definition of crystallization is that it is a purification method in which a pure substance is obtained in the form of a crystal by cooling or evaporating the solvent.
Real-Life Examples of Crystallization
| Substance | How Crystallization Occurs |
|---|---|
| Sugar crystal | Sugar crystals form when saturated sugar syrup cools. |
| Salt crystal | Sea salt is obtained after seawater evaporates. |
| Copper sulfate crystal | Blue crystals are prepared when saturated copper sulfate solution cools down. |
| Alum crystal | A bundle of transparent alum crystals appears from a saturated solution when it evaporates. |
| Medicines | Many pharmaceutical medicines are purified using the crystallization method. |