Freezing Point
Beginning of paper
, temperature at which a liquid congeals into the solid state
at a given pressure (see PRESSURE; TEMPERATURE).
The of a pure (unmixed) liquid is essentially the same as
the melting point of the same substance in its solid form and may be
regarded as the temperature at which the solid and liquid st ....
Middle of paper
.... as the temperature at which freezing or melting continues once it
has commenced.
All solids melt when heated to their melting points, but most liquids can
remain liquid even though cooled below their freezing points. A liquid may
remain in this supercooled state for some time. This phenomenon is
explained by molecular theory, which conceives the molecules of a solid as
being well ordered and the molecules of a liquid as being disordered. To
solidify, a liquid must have a nucleus (a point of mo ....
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Page count: 2 (approximately 250 words per page)
