CBSE - XII Science - Chemistry - The Solid State
What is difference between crystalline solid and amorphous solid?
Difference between crystalline solids and 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.|
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