2006-11-29 16:28:27 · 9 answers · asked by luisajg@sbcglobal.net 1 in Science & Mathematics ➔ Chemistry
Salt water has a lower freezing point.
2006-11-29 16:30:30 · answer #1 · answered by feanor 7 · 0⤊ 0⤋
Saltwater has a significantly lower freezing point than fresh water: At 3.5% salinity, freezing point is 28.5 degrees Fahrenheit, instead of 32 degrees at 0% salinity.
So as the air cools, fresh water will freeze long before salt water freezes.
As salt water freezes much of the salt is expelled from the water.
2006-11-29 16:41:56 · answer #2 · answered by some sense 2 · 0⤊ 0⤋
Salt water contains salt which lowers the freezing point of water.
2006-11-29 16:36:23 · answer #3 · answered by kdesky3 2 · 0⤊ 0⤋
it makes the water a solution thus altering the properties. The addition of salt raises the boiling point and and lowers the freezing point.
2006-11-29 16:34:08 · answer #4 · answered by roncho 4 · 0⤊ 0⤋
Because salt when added to water acts as an impurity . Impurities decrease freezing point of water &
Increase boiling point as well.
Hope that helps
2006-11-29 18:09:57 · answer #5 · answered by Anonymous · 0⤊ 0⤋
the addition of salt to water lowers the freezing point of water. that's why they salt the roads before a big snowstorm.
2006-11-29 16:30:24 · answer #6 · answered by ♪ ♫ ☮ NYbron ☮ ♪ ♫ 6 · 1⤊ 0⤋
Salt dissolved in water acts as an insulator and lowers the freezing point necessary for ice to form. Freshwater doesn't have that same advantage.
2006-11-29 16:32:20 · answer #7 · answered by somewherein72 4 · 1⤊ 1⤋
the salt interferes with the waters ability to interact with itself it gets in the way of the water molecules and makes it harder for them to pack together.
2006-11-29 17:22:10 · answer #8 · answered by jujri 2 · 0⤊ 0⤋
Becase it doesn't have salt in it.
2006-11-29 16:31:08 · answer #9 · answered by Phillip 3 · 0⤊ 0⤋