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Corsa Sport » Message Board » Off Day » What freezes quicker - hot water or cold?

Poll: What freezes quicker - hot water or cold?
Hot 26 (65%)
Cold 14 (35%)


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Author What freezes quicker - hot water or cold?
Sam
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3rd Jun 06 at 20:23   View User's Profile U2U Member Reply With Quote
abdus
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3rd Jun 06 at 20:24   View User's Profile U2U Member Reply With Quote
hot
Steve
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3rd Jun 06 at 20:27   View Garage View User's Profile U2U Member Reply With Quote
hot

[Edited on 03-06-2006 by Steve]
Mistamist
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3rd Jun 06 at 20:32   View User's Profile U2U Member Reply With Quote
Remembering from A level chemistry it is Hot/Warm water, think the name of this is the Mpemba effect.
Robin
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3rd Jun 06 at 20:33   View Garage View User's Profile U2U Member Reply With Quote
agreed. the Mpemba effect, thats what I was thinking

for the idiots on here, please explain why...
abdus
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3rd Jun 06 at 20:34   View User's Profile U2U Member Reply With Quote
http://math.ucr.edu/home/baez/physics/General/hot_water.html#History

http://library.thinkquest.org/C008537/cool/freeze/freeze.html

[Edited on 03-06-2006 by abdus]
Mistamist
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3rd Jun 06 at 20:36   View User's Profile U2U Member Reply With Quote
Hahah, my memory isnt that good, i think it had something to do with densitys and how the water moves in the container (cold water sinking, warm water rising)
Ry_B
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3rd Jun 06 at 20:37   View User's Profile U2U Member Reply With Quote
Hot isn't it, aren't you supposed to use cold water on your wind screen on icy mornings for that reason? Or is that somethin totally different
Robin
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3rd Jun 06 at 20:41   View Garage View User's Profile U2U Member Reply With Quote
thats to do with the sudden temperature increase cracking your screen ryan
Tiger
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3rd Jun 06 at 22:32   View User's Profile U2U Member Reply With Quote
I also like the fact that you should never put icecubes in a thermos flash full of cold liquid because the liquid drops to the temperature of the ice quicker than it can warm up, the entire contents of the thermos will freeze.

Ben.
duffman
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4th Jun 06 at 11:45   View User's Profile U2U Member Reply With Quote
yeah heat acts as a catalyst (sp) speeding up the reaction in this case freezing. seems weird tho how that happens.
Skylined
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4th Jun 06 at 12:55   View User's Profile U2U Member Reply With Quote
Never knew that

Hope it comes up on my Physics AS level exam next week
J da Silva
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4th Jun 06 at 13:01   View User's Profile U2U Member Reply With Quote
Hot, was mentioned in a Science lesson once, although if it's in your AS Levels, then I must have accidently took mine at the age of 14.
abdus
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4th Jun 06 at 13:26   View User's Profile U2U Member Reply With Quote
cold- 11 votes
Simon
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4th Jun 06 at 13:35   View User's Profile U2U Member Reply With Quote
If hot freezes quicker surely at some point it must reach the same temperature as cold water before it freezes so how come it does so quicker? not saying hot is wrong just wondering why

 
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