Friday, May 31, 2013

Difference between Amorphous and Crystalline solids

Difference between Amorphous and Crystalline solids
Property
Crystalline solids
Amorphous solids
Shape
Definite characteristic geometrical shape
Irregular shape
Melting point
Melt at a sharp and characteristic temperature
Gradually soften over a range of temperature
Cleavage
property
When cut with a sharp edged tool, they split into two pieces and the newly generated surfaces are plain and smooth
When cut with a sharp edged tool, they cut into two pieces with irregular surfaces
Heat of fusion
They have a definite and characteristic
heat of fusion
They do not have definite heat of fusion
Anisotropy
Anisotropic in nature
Isotropic in nature
Nature
True solids
Pseudo solids or super cooled liquids
arrangement of constituent particles
Long range order
Only short range order.

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