I've heard two schools of thought on the subject. In 1st grade my teacher told us the hot water would freeze first, I came home and shared my new found knowage with my father who disagreed! He therorized the hot water would turn in to cold water before/on it's way to freezing.

I don't remember what I had for breakfast but I remeber that!

Thanks Dave! Glad that linked gave you some info you were looking for.

Depending upon the conditions, both schools of though can be right.

Try this:

Fill a container (or ice cube tray) with hot and cold water. When all is said and done, the ice cube made with hot water will be smaller. The hot water evaporates in the freezer.

Another imponderable?
 

ok, one of the articles on that page that was linked brought another question to my mind.
Wht is it that bubbles always go toward the surface in a carbonated drink, including beer, except Guiness. (the bubbles drop in Guiness):confused:

J

I tried this awhile back, and cold water freezes.


If you want another puzzle... why when you mix 50ml of alcohol, and 50ml of water does it not equal 100ml?

-Sam.

Re: Another imponderable?
 

Interesting, I don't drink dark beer so I'm unfamiliar with this but had to do a search... basically the larger bubbles rise faster than the smaller ones, displacing liquid(beer) which causes the smaller (lighter) bubbles to be sucked beneath.

http://www.fluent.com/about/news/pr/pr5.pdf

Actually I remembered doing this when I was younger and seeing how small the cubes where with hot water decided to use cold water there after.. not only that but the hot water left some kind of residue in the tray.

I also felt stupid the same day I made the post about water evaporating at different temps, when I began to think about fog and the smoke on the water. Having been raised on the water this should have been an automatic response for me..

I probably should know this but its been many years since I was in college... Without researching it, I'd bet it weighs the same. It probably has a chemical reation/molecular bond.