8. Polymers
The change of state of a material is thermodynamically well defined, if for characteristic values of the thermodynamic coordinates, it results in a discontinuity of the essential physical characteristics.
The solid state is generally the result of such a change. On a microscopic scale, it is characterized by the fact that the material's constituent elements occupy well-defined, time-invariant relative positions. This gives rise to the characteristic that qualifies these materials as solids: they do not deform spontaneously, unlike liquids.
During the "solidification" of
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Polymers
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