Hot water freezes faster then cold water, and now we know why. - Polidicks

[IMG]http://www.iflscience.com/sites/www.iflscience.com/files/styles/ifls_large/public/blog/[nid]/Ice_cubes_openphoto.jpg?itok=9me-Xw00[/IMG] [QUOTE]They propose that when the water molecules are brought into close contact, a natural repulsion between the molecules causes the covalent bonds to stretch and store energy. When the liquid warms up, the hydrogen bonds stretch as the water gets less dense and the molecules move further apart. The stretching in the hydrogen bonds allows the covalent bonds to relax and shrink somewhat, which causes them to give up their energy. The process of covalent bonds giving up their energy is essentially the same as cooling, and so warm water should in theory cool faster than cold.[/QUOTE] [URL="http://www.iflscience.com/chemistry/hot-water-freezes-faster-cold-and-now-we-know-why"]Source[/URL]

The notion of hot water freezing faster than cold, even if it's an actual thing, seems like some form of chaos sorcery.

Fuckn witchery I tell yeah

I mean it makes sense when you think about it, though the time would be so fucking miniscule you'd only notice it in a closed lab environment where you're actively trying to freeze it faster, and even then it could end up being a matter of microseconds

Still doesn't make sense.

So when the molecules are further apart they freeze faster?

[QUOTE=Rangergxi;42728482]So when the molecules are further apart they freeze faster?[/QUOTE] When the water cools from warm to cold, the hydrogen bonds between the molecules come closer, giving away energy that was pushing them apart, allowing it to cool faster.

It's more like the molecules are so full of energy they want to give it away pretty badly, so they just end up giving away a lot within a small burst when in freezing temperatures when heated (overflowing with energy).

[QUOTE=ironman17;42728410]The notion of hot water freezing faster than cold, even if it's an actual thing, seems like some form of chaos sorcery.[/QUOTE] Tzeentch is giggling like a little shit right now.

[QUOTE=ForgottenKane;42728729]It's more like the molecules are so full of energy they want to give it away pretty badly, so they just end up giving away a lot within a small burst when in freezing temperatures when heated (overflowing with energy).[/QUOTE] Looking at the reasons, it seems like the covalent bonds act similar to rubber bands; they store potential energy when stretched, and snap back to normal size when released. If one could induce that state through mind-directed energies, that'd be the mark of a Chaos Sorcerer.

[QUOTE=ironman17;42728410]The notion of hot water freezing faster than cold, even if it's an actual thing, seems like some form of chaos sorcery.[/QUOTE] Water is now heretical.

Stop talking about heresy before a commissar shows up

Especially when the Inquisition found out about Dagon.

[QUOTE=Psychokitten;42729045]Water is now heretical.[/QUOTE] Repent to Sigmar and drink nothing but milk.

so hell freezing over isn't that unlikely?

I could have sworn I've seen a video proving that hot water does not freeze faster than cold water.

[QUOTE=Desuh;42729246]so hell freezing over isn't that unlikely?[/QUOTE] Unless it got really cold in hell all of a sudden

[QUOTE=Desuh;42729246]so hell freezing over isn't that unlikely?[/QUOTE] what i want to know is does this mean anything new about a snowball's chance in hell?

[QUOTE=ironman17;42728410]The notion of hot water freezing faster than cold, even if it's an actual thing, seems like some form of chaos sorcery.[/QUOTE] you are aware then that cold water is actually denser than solid water too. water is a weird but awsome molecule like that

[QUOTE=Moustacheman;42729065]Repent to Sigmar and drink nothing but milk.[/QUOTE] I'm lactose intolerant :(

[QUOTE=Cakebatyr;42730320]I'm lactose intolerant :([/QUOTE] They make pills for that you know

This is not new- they've known why for a while. Water is 2 hydrogen and one oxygen. Make a v with your middle and index finger. At the tip imagine hydrogen. At the bottom of the v sits oxygen. The angle of the v (basically the hydrogen moving away from each other) is effected by temperature. Hotter= bigger angle. Colder= less angle. Until it starts freezing to a solid. Then the angle gets bigger (which is why ice takes up more volume then the liquid it started off as) So big angle when it's hot- big angle when it's froze= hot water freezes faster then cold water. You can see the difference yourself by filling two ice cube trays with diff temp waters. It's a rather large difference in time.

Is this why when you freeze hot water, the ice cubes are clearer than cold water ice cubes?

[QUOTE=Del91;42730646]Is this why when you freeze hot water, the ice cubes are clearer than cold water ice cubes?[/QUOTE] it's air pockets in ice that make it cloudy or clear, the less air inside any quantity of ice per unit, the clearer it is and vice versa.

[QUOTE=Cakebatyr;42730320]I'm lactose intolerant :([/QUOTE] burn this mutant

[QUOTE=Del91;42730646]Is this why when you freeze hot water, the ice cubes are clearer than cold water ice cubes?[/QUOTE] It freezes faster so there's less time for air bubbles to form.

Too bad hot water is riddled with bacteria. Unless were talking about boiled water here.

All I want to know right now is, should I start making ice cubes out of hot water now?

Always use hot water to make ice cubes. Apparently they form faster, but also taste better.

Is it possible to give an estimate on how much faster?