regular water!:)
Salt Water
Salt in a water solution will LOWER the Freezing Point of the resultant solution. Therefore the Saltwater will have to be cooled to a lower temperature. All other things being equal, that should take longer than the plain tap water.
On the contrary, it takes longer for salt water to freeze - it freezes at a lower temperature than fresh water does.
Salt water freezes at a lower temp than fresh, meaning colder. It may freeze faster when chilled enough be cause the salt would disrupt the plateo of the water so it may freeze faster.
I believe hot water freezes faster because it is supercooled. Cold water is non-supercooled. When cold water freezes ice crystals form and float to the top, forming a layer of ice over the top of the water, so the layer of ice stops evaporation . While the hot water, which is probably no longer hot in the freezer,when it does freeze, it freezes throughout, creating more or less of a slush before freezing solid.
Sugar water freezes faster than salt water. However, regular tap water will freeze faster than either salt, or sugar water.
I think it is fresh water freezes faster because the salt melts ice.
the salt prevents the water from getting cold
Salt Water
It doesn't. Tap water freezes faster than salt water.
Fresh water freezes faster than salt water, yes.
When water has a substance dissolved in it, it freezes at a lower temperature. Salt water has salt dissolved in the water, so it freezes at a lower temperature than fresh water.
Fresh water freezes much much quicker.
the salt lowers the freezing point.
Fresh water
Fresh water freezes at a higher temperature than salt water. This is because the presence of impurities in water lowers its freezing point.
fresh water, because salt water is more dense