If hot water rises, why does ice form on the top of water than the bottom?
In: Chemistry
If water or gas rises and drops depend on the density. Water is densest at 4 degree C and above that it is less dense. So colder water the 4C will flow on top of water at 4C so it then cold water rises.
In most cases out in nature the reason that water form ice on the top and not the bottom is that in combination that the ground in most situation warmer the the air. So it it the top exposed to the colder air and the ice form there and where it in contact with the ground that is above freezing temperature.
If you put out a bucket in cold air it ice is first formed on the top but then on the bottom and the other sides and will freeze from the outside to the center. That is because all sides is exposed to cold air trough a thing bucket and not to warmer ground
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