Separation of a solid from its hot saturated solution by cooling is called__________________?
Correct answer: D. crystallization
- A. vapourization
- B. solvent extraction
- C. filtration
- D. crystallization
Explanation
When a hot saturated solution is cooled, its solubility decreases and the excess dissolved solute separates as crystals, a process called crystallization. Students may choose filtration because it collects the solid afterward, but filtration itself does not cause the solid to separate from the solution by cooling.
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About Crystalline Solids
Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.
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