Glassy liquid crystals amorphous molecular glasses

Some substances are, however, not able to crystallize, for instance normal glass, as a result of a too irregular molecular structure. When such a substance is cooled down from the liquid state, and follows the line AB, then from B to D it still remains a fluid, which solidifies at D without showing a jump in volume. The line then continues as DE, with about the same slope as CF the matter is, however, not in a crystalline condition, but in an unordered, amorphous, glassy state, and has, therefore, a greater volume. 

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