[neverdem]

IMHO, higher temperatures mean greater molecular, ionic or microscopic particulate velocity in a solution or suspension, in which those little suckers are moving, which causes a faster rate of crystal formation. It maximizes wasted heat energy, i.e. entropy, for which the Second Law of Thermodynamics goes wild!

[rawcatslyentist]

>" Why does hot water freeze faster than cold water?"

Because G_d made it that way.

[bruinbirdman]

And while you'r at it, why does water increase in volume as it changes from liquid to solid state?

In fact, only The Lord knows. Ask Bacon or Aristotle or even anyone living.

yitbos

[I see my hands]

It really, really, doesn't.

This 'contest' is an effort to render objectivity as evil.

[NTHockey]

Close; but one of my courses in Chemical Engineering explained it so many years ago.

Now where do I collect my prize?

[Tzimisce]

How did anyone prior to refrigeration know that boiling water freezes faster than cold water?

I think the mythbusters busted that myth btw.

[neverdem]

Immune system molecule weaves cobweb-like nanonets to snag Salmonella, other intestinal microbes

New method generates cardiac muscle patches from stem cells

A Gene for Fish Odor

Mysterious Asian ‘corpse flower’ parasite actually steals huge chunks of its host’s DNA – but what does it do with it?

FReepmail me if you want on or off my health and science ping list.

[nicepaco]

It doesn't.
Won a bet on this in 1980
with a friend who always filled
the ice cube trays with hot water.
I understand that you can make the
hot water win in a vacuum at the speed
of light in the presence of 2 blind cats
and some green crystals but if you want a
cocktail in a hurry fill the trays with cold
water

[GrandJediMasterYoda]

Why does hot water freeze faster than cold water?

Does it?

I did not know that. I honestly did not know that.

[knarf]

Y'know ... I was JUST thinkin' that and was gonn'a synopsize it with one word .... DRAMA

[SunkenCiv]

The Mpemba Effect, good one... cold water is more dense, so there’s more of it from which to remove heat? Oh wait, that doesn’t work, water is one of the few (or the only?) material which increases in volume as it approaches the freezing point (hence, ice floats), and as the temperature continues to fall in the ice, *then* starts to shrink.

Thanks neverdem.

[DeaconRed]

"WHY DOES HOT WATER FREEZE FASTER."

Because of the down hill slide effect.
Now send me my money. . . . .

[Condor51]

Okay. 'series'. I was gonna say what you did neverdem, but in a simpler way.

Kinda like hot water molecules = car going 100 mph and hitting a concrete wall, vs a car going 10 mph and hitting the wall. The 'wall being Ice' in the case of water. And mph = molecular 'speed'.

[babygene]

My guess would be that it involves the amount of adsorbed gasses in cold water as opposed to hot water.

Heating the water over an extended period drives the adsorbed gasses out. So cold water will have more gasses adsorbed in it.

Adsorbing a gas in water lowers the freezing point. We’ve all seen this with a can of coke that’s very cold but still liquid, and when you pop-the-top and let some co2 out it immediately freezes.

[Verginius Rufus]

I would say it's Mpemba's fault.

Whoever he was.

[USMCPOP]

Hint: It’s related to the fact that water takes longer to boil if you stand there and watch it.

[bunkerhill7]

RSBC offers £1000 for explanation of an unsolved legendary phenomenon
Royal Society of Body Chemistry ^ | 26 June 2012 | NA

Posted on Wednesday, June 27, 2012 3:41:32 AM by neverdoneit

Why does a hot woman warm up faster than a frigid woman?

[UCANSEE2]

Isn’t this a test by the Royal Society, to see who is dumber?

The general public or their students ?

A new ‘evaluation’ method, perhaps?

Or is the Royal Society training their students to accept ‘academic’ knowledge (the belief that hot water freezes faster) without question?

[UCANSEE2]

If you put two identical ice trays, filled with exactly the same amount of water, at the exact same temperature, in the freezer, which one will freeze first ?

[MHGinTN]

If you look at the water molecule it is ‘lopesided’. When heated, a body of water tends to layer thus tends to align the lopesidedness, allowing a faster crystalization when the temperature drops.

[LachlanMinnesota]

Hot water freezes faster than cold water for the same reason that global warming e-mails keep getting changed by outside forces when subject to observation by discriminating minds.