If you freeze salt water does the salt always drop out?

Question

I understand icebergs are, to all intents, pure water?

Answer 1

This is what happens if you start freezing a glass of sea water: it will start to freeze at a lower temperature than fresh water (around -4 C, but variable depending on the salinity you start with).
Important, the salinity of the ice formed is almost pure water (it is not salty). Some salty water may be trapped on the ice though, but the ice itself is fresh water. If you keep lowering the temperature, more ice will form and the remaining salty water gets even saltier. This process will continues until an eutectic is reached and then you will have a fast crystallization of ice, a mineral called hydrohalite. This eutectic is about -21 C, but depends on other components, like Mg, Ca that are also abundant in the composition of sea water.

Answer 2

no the salt does not get removed by freezing. the icebergs were formed by water that didn't contain salt

Answer 3

I have never heard of salt water freezing. We sprinkle salt onto ice or snow to thaw it out so I don't think it can be done.

Answer 4

the salt is still there but it freezes at a lower temp than normal water.

Answer 5

No it never drops out. How could anything drop ot of ice? Icebergs are not seawater. They are glacial land water floating in the sea.

Answer 6

No. At a cold enough temperature, you get sea ice, which is frozen salt water.

Icebergs, as others have mentioned, are freshwater ice, made from glacial ice.

Answer 7

Nope the salt remains, however if you boil salt water then condense it the salt will be removed =)

Answer 8

no the salt is still there