TYPES OF SOLID :-
■ AMORPHOUS SOLID
An amorphous solid is a substance in which atoms, molecules or ions have a random and non-uniform arragement. They melt over a range of temprature. The amorphous solids do not have a fixed geometry or a sharp melting point.
E.g :- Glass, Plastic, Rubber , etc.
■ CRYSTALLINE SOLID
Crystalline solid is a substance in which the atoms , molecules or ions have a characteristic, regular and fixed arrangement. They have a sharp melting point. Crystalline solids have a definite geometric shape such as cube, octahedron, tetrahedron etc.
E.g:- Sodium chloride ( table salt ) , sugar diamond, copper sulphate , etc.
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