Why Does Hot Water Freeze Faster Than Cold Water Reddit
Camila Farah
The hot water beaker loses more water molecules through evaporation so there s less of it to freeze.
Cold water would freeze faster in this case but it would result in ice that flakes easily. Finally there s the idea that warm water might cool faster due to increased convection currents. Fascinating as all this no doubt is all it basically proves is that very hot water freezes more slowly than very very hot water. The ordinary fumbler in the fridge on the other hand is dealing with temps more like the ones i was measuring in which case cold freezes faster than hot.
Hot water can freeze faster under certain very controlled settings but i ll let someone elaborate on that. The physics of why hot water sometimes freezes faster than cold water for decades physicists have debated whether the phenomenon exists and how to study it. Monwhea jeng proposes as a more precise wording. I just received this notice.
So at the same rate of heat removal a sample of cold water will freeze sooner than the same size sample. Why does hot water freeze faster than cold water. While various theories have been proposed as to why this effect occurs a te hot water seems to freeze faster than cold water known as the mpemba effect. It seems obvious that the answer should be no because all things being equal hot water takes longer to cool down than cold water and so it couldn t possible freeze faster.
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The phenomenon when taken to mean hot water freezes faster than cold is difficult to reproduce or confirm because this statement is ill defined. But observations over thousands of years as well as countless modern experiments have shown that the opposite is true under carefully controlled conditions hot water at times seems to freeze faster than cold water. If the temp is low cold water less heat must be removed to get to 0 c than if it s hot.
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