Melting point
Melting point is the temperature at which a given solid will melt. It is an intrinsic property of a substance. The melting point of a substance depends on pressure and is usually specified at a standard pressure such as 1 atmosphere or 100 kPa.
Definition[edit | edit source]
The melting point of a substance is the temperature at which it changes state from solid to liquid. When considered as the temperature of the reverse change from liquid to solid, it is referred to as the freezing point or crystallization point.
Measurement[edit | edit source]
The melting point of a substance is usually measured on a timescale of minutes. It is often measured with a melting-point apparatus.
Impurities and mixtures[edit | edit source]
Impurities can lower the melting points of substances. A pure substance generally has a higher melting point than a mixture.
Tables of melting points[edit | edit source]
Tables of melting points can be found in the CRC Handbook of Chemistry and Physics and Perry's Chemical Engineers' Handbook.
See also[edit | edit source]
References[edit | edit source]
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