CBSE Class 12-science Answered
What is difference between crystalline solid and amorphous solid?
Asked by hasanali.ali986 | 01 Apr, 2015, 08:59: PM
Expert Answer
Difference between crystalline solids and amorphous solids:
| Crystalline solids |
Amorphous solids |
| Crystalline solids have definite and regular geometry and have 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 posses 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 knife. |
Usually the amorphous solids exhibit irregular cut. |
| They have 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 as true solid. | Amorphous solids are considered as super cooled liquids or also pseudo solids. |
| Crystalline solids display anisotropism. | Amorphous solids display isotropism. |
Answered by Arvind Diwale | 02 Apr, 2015, 09:22: AM
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