Crystalline solids can be identified easily from their ___________________?
Correct answer: A. Sharp melting point
- A. Sharp melting point
- B. Definite geometry
- C. Transition temperature
- D. Colour
Explanation
Crystalline solids have a sharp, fixed melting point because their regular lattice breaks down at a definite temperature. Amorphous solids soften over a range of temperatures, making melting behavior a particularly useful identification test. Students may choose definite geometry because crystals can have regular external faces, but crystal shape can be affected by growth conditions and is less reliable as the intended test.
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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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