freezing


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freezing,

change of a substance from the liquid to the solid state. The temperature at which freezing occurs for a pure crystalline solid is called the freezing point and is a characteristic of the particular substance. The reverse process, the change of a solid to a liquid, is called melting. See melting pointmelting point,
temperature at which a substance changes its state from solid to liquid. Under standard atmospheric pressure different pure crystalline solids will each melt at a different specific temperature; thus melting point is a characteristic of a substance and can be used
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; refrigerationrefrigeration,
process for drawing heat from substances to lower their temperature, often for purposes of preservation. Refrigeration in its modern, portable form also depends on insulating materials that are thin yet effective.
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References in periodicals archive ?
Until now, additives were required to replace the starch that breaks down during the freezing process.
As water nears the freezing point of 0[degrees]C (32[degrees]F), its molecules expand and become less dense, which explains why ice cubes float.
This permitted easy filling and feeding of the legs and induced a satisfactory freezing pattern.
He was backed by Bishop Elio Sgreccia, vice-president of the Pontifical Academy for Life, who questioned the appropriateness of adoption without a universal agreement to stop the production and freezing of embryos.
It should be noted that freezing point depression and boiling point elevation experiments always have relatively large errors because results are dependent upon the accurate measurement of small temperature changes.
Reid was selected for his innovative research that has helped shape the understanding of the fundamental basis of food freezing.
If you keep the mini-sprinkler on all night, a 32-degree coating of watery ice develops on the trunk and foliage, serving as a protective covering since the danger zone for most tropicals is only reached when the temperature drops several degrees below freezing.
People think freezing reduces quality, but if the science is sophisticated enough, that's not true at all," says Sawatari.
This extreme variation makes sense if freezing begins at the surface of the drops, not at the cores.
That's because the freezing point and melting point for a given substance are the same.
The cooling curve of a pure metal would show the metal slowly cooling to its freezing point then leveling off at a constant temperature as the metal loses its heat of fusion.
Harris of the University of California, Davis, with the inaugural Frozen Food Foundation Freezing Research Award.