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Distinguish between crystalline solid and amorphous solid - Chemistry

Distinguish Between

Distinguish between crystalline solid and amorphous solid

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Solution 1

  Crystalline solid   Amorphous solid
(i) They have a definite geometrical shape (i) They have an irregular shape
(ii) They have a sharp melting point (ii) They melt over a range of temperature
(iii) They are anisotropic (iii) They are isotropic
(iv) They are pure solid (iv) They are supercooled liquid.
(v) They have long-range order of regular pattern of arrangement of constituent
particles.
(v) They have short-range order of regular pattern of arrangement of constituent
particles.
(vi) They have definite heat of fusion. (vi) They do not have a definite heat of fusion.

Solution 2

  Crystalline solids Amorphous solids
1. The constituent particles are arranged in a regular and periodic manner. The constituent particles are arranged randomly
2. They have sharp and characteristic melting points. They do not have sharp melting point. They gradually soften over a range of temperature.
3. They are anisotropic, i.e., have different physical properties in a different directions. They are isotropic, i.e., have same physical properties in all directions.
4. They have long-range order. They have only short range order.
5. e.g. Ice, NaCl  e.g. Glass, rubber, plastics, etc.
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