ICSE Class 8 Answered
What is the difference between amorphous and crystalline forms?
Asked by mkp400 | 03 Jan, 2018, 10:42: PM
Expert Answer
Difference between crystalline solids and amorphous solids:
Crystalline solids |
Amorphous solids |
Crystalline solids have definite and regular geometry and have a long range as well as short range order of constituent particles. |
In case of amorphous solids, the particles in the constituent are arranged irregularly. They do not have any definite geometry and have short range order. |
Crystalline solids possess high melting points. |
They are devoid of sharp melting points. |
External regularity is present when crystalline solids are formed. | No external regularity is seen when amorphous solids are formed. |
They give a clean surface after cleavage with a knife. |
Usually, the amorphous solids exhibit irregular cut. |
They have the definite heat of fusion. | Amorphous solids do not possess any particular heat of fusion. |
Crystalline solids are very rigid and their molecules cannot be deformed by mild distorting force. | Amorphous solids do not exhibit rigidity. Deformation could be done by bending or compressing them. |
Crystalline solids are considered true solid. | Amorphous solids are considered as supercooled liquids or also pseudo solids. |
Crystalline solids display anisotropism. | Amorphous solids display isotropism. |
Answered by Ramandeep | 04 Jan, 2018, 09:16: AM
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