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when salt dissolves in water it doesn't allow the water to get warm because it traps the heat within the water, therefore keepin the water cold.

...and a little thing called specific gravity comes into play....the water with specific gravity of 1 is now salt water with a different specific gravity depending on the salinity. Consider alcohol; it has no salt but does not freeze right? Beer's sg is slightly higher than water so it wont freeze til perhaps 30F.

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Q: How and why does salt keep water cold?
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Related questions

Does Cold water keep ice cold?

The water would have to be colder than the ice to keep it cold. That is not possible unless it is brine(salt water). Then ice at 32f could be cooled by brine at say 30f.


Does salt water or fresh water melt faster?

Most probably , it would be fresh water. This is because since there is no salt which would keep the cold , the fresh water would melt faster.


What happens to salt when it is put into cold water and stirred?

The cold water becomes salt water. The salt doesn't dissolve like sugar.


Is warm salt water more dense than cold salt water?

Cold water is more dense.


How does salt keep wet roads from freezing in the cold weather?

The freezing point of water is lowered because by dissolution salt release heat.


Which water will freeze faster cold water with salt or normal water with salt?

normal water with salt


How does cold water affect how salt dissolves?

Cold water simply slows down the rate at which salt dissolves.


Why does water freezes faster then salt water?

the salt prevents the water from getting cold


What is the freezing point of hot salt water?

Same as the cold salt water.


What are the salinity differences of cold and warm water - fresh and salt water?

Fresh water tends to have no salt content. Fresh water is not ionized. Salt water is ionized with sodium chloride (salt). The average salinity of the oceans is roughly 35 ppt (parts per thousand).


What happens when salt water is poured into the glass containing cold tap water?

When salt water is poured into a glass containing cold tap water, the salt water will collect and settle at the bottom of the glass. This is due to the salinity and density of the salt water.


Will add salt to ice water help keep soda cold?

Yes, it will keep the soda cold because the salt help the ice not to melt. Don't believe me check it yourself. Get an ice cube put a little salt on it and it doest melt. Or get an ice cube put some salt on it and then get a string put on top and IT WILL STICK!!!!!!!