Posted by JMOR on December 27, 2009 at 15:16:00 from (72.181.166.239):
In Reply to: Fact or fiction????????? posted by chevytaHOE5674 on December 27, 2009 at 14:45:40:
old said: (quoted from post at 18:45:40 12/27/09) Well way back when I was in school they always told us the water would freeze faster if it was hot. So which is it does hot water freeze faster then cold??? Also back up why your answer is the correct one. Been thinking about setting some water out but it is to cold and I'm to lazy plus watching water freeze might get boring LOL
Your uncontrolled experiment would be worthless, because in heating the water you will alter the air content, alter impurities, etc., thus making the comparison invalid. Heat will transfer to the surrounding cold air at a greater rate from the hotter water, initially, than from the cooler water, BUT, once both reach the same temperature, thereafter, the rate from that temperature to freezing will be the same, IF both samples have same air & impurities content, control of evaporation and a number of tiny variables. The problem is that control of all these variables is so difficult that you can under differing circumstance find either one to freeze faster from time to time. So, bottom line for Joe Blow, is yes & no.
You didn't really expect a definitive answer, did you? After all this question is about as old as 'which came first, the chicken or the egg?'
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