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Politics : Foreign Affairs Discussion Group

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To: FaultLine who wrote (15754)	1/7/2002 12:16:56 PM
From: Hawkmoon	Read Replies (2) of 281500

Actually salt water DOESN'T freeze.. what happens is that the temperature lowers sufficiently for the solidifying h2o molecules to be able to push out the salt molecule as the h2o transitions from a liquid to a solid (ice crystals). The salt is pushed into higher temperature water and forms a brine (if in a container). But this site seems to explain it better than I have: antoine.fsu.umd.edu "When moderately salty water freezes, you might expect a uniformly mixed salt and ice crystal to form (after all, the salt and water were homogeneously mixed in the first place). But that's not what happens. First, tiny platelets and needles of ice form over the surface of the liquid. The ice crystals incorporate water, but leave the salt behind, so the solution becomes saltier and saltier as the freezing continues. Finally, the flat ice crystals grow together, trapping small pockets of concentrated brine inside. A cloudy, brittle frozen slush forms." (wink, wink, nudge, nudge.. ;0) Hawk

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