Does warm water freeze faster than cold water? Experimental evidence seems to indicate that hot water does indeed freeze faster than cold water - this seems counterintuitive and there are a number of different explanations for the phenomenon. I don't think anyone has found a grant to study it in depth so there are not clear answers to the cause. Thermal contact argument The hot water melts the ice under the tray and when it …showed first 75 words of 555 total…

…showed last 75 words of 555 total…gases, which reduce the rate of freezing, will allow the hot water to freeze more quickly. It isn't a true argument Hot water does not freeze faster than cold water. You can take your pick which you believe! Personally I think there is a weight of evidence that it is true and hot water does freeze more quickly than cold water and I suspect that all the reasons above may have a role to play.