by 
ryno365
ANSWERS: 6
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Salt and water combine to form a molecule. Salt has sodium (NA) which inhibits crystalines from forming. Salt water can also seperate as can be observed by boiling salt water until the water is gone leaving only the salt in the pan. Whats not so obvious is that cold will also seperate salt and water. The seperated water molecules can freeze (form crystalines) because the sodium is no longer present. As the amount of salt in the water (concentration) increases, the lower the temperature needed to cause the seperation.
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because it does.
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because it does.
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If yu have both water and ice together, no salt, the molecules go between the two equally. The ice melts as fast as the water freezes. So the two are in equilibrium. Adding salt to the water changes the equilibrium. It disrupts it. The salt dissolves but it has no where to go. It can't bind with the water molecules. So there are then less water molecules to freeze solid with the ice. It won't turn to ice. SO you have more melting than freezing happeneing. SO then the temperature drops so there will ber a freezing to the ice solids. THe water gets colder, dropping the freezing point..
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because salt is super cool, and it makes the water really cold, so fast, that it doesnt have enough time to freeze. it just says woooah that salt is soo cool, im just going to sit here and be - 3 degrees. then it realises no, this isnt right, im going to have to freeze, and so it does.
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By ryno365 on Feb 10th, 2006
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