An amazing chart!

[bennymacca]

i like old man Swanky, he is the type of guy that would get into some hard core philosophy when you are pissed at 4am

[rcon]

should have waited till i finished typing this post as well
if you cool water down very slowly, gradually lowering the temperature, you can actually keep it in its liquid form, but get it to a point where its temperature is lower than 0 degrees, because the water hasn't lost enough energy to change state into ice yet.


sorry for nerding that up a bit, but i find it interesting

are you sure that is why it doesn't freeze? I was under the impression you could super cool water if it was extremely pure. You always need "something" for a liquid to crystallize around, and extremely pure water lacked "something" for the first crystal to form around.

[maccatak11]

therodynamics at uni, it was one of the subjects that didnt interest me much.

Was that because you couldn't spell it?

[bennymacca]

are you sure that is why it doesn't freeze? I was under the impression you could super cool water if it was extremely pure. You always need "something" for a liquid to crystallize around, and extremely pure water lacked "something" for the first crystal to form around.

you are talking about crystallisation, which is different.

maybe i shouldn't have chosen water as the example, because water is pretty much unique. there are lots of different types of ice, it is pretty complex.

change my example to carbon dioxide above.

it is made even more complex because water is less dense as a solid than it is as a liquid. water is most dense at about 4 degrees c.

read the wiki page on ice, there are many types. poor example on my part

Was that because you couldn't spell it?

is that why you chose PE, because it was the only thing you could spell?

[rcon]

http://en.wikipedia.org/wiki/Supercooling

awesome stuff. substitute "seed' for "something" in my post about and its spot on tho.

you are talking about crystallisation, which is different.

freezing IS crystallization, no? i'll read your wiki in a sec

[rcon]

Ice, technically, is one of the 15 known crystalline phases of water.

[bennymacca]

freezing IS crystallization, no? i'll read your wiki in a sec

this is correct

i think i am getting myself confused a bit here.

you are right about the super cooled water bit, i.e if there is a seed, water will freeze at a higher temperature, but there is a reason why this seed does what it does.

reading up a bit, i think that impurities change the pressure locally around the impurity, allowing the liquid to change state. so in short, i think it does have something to do with latent heat, but my original explanation is too simplistic.

if you want some heavy reading, try this
http://en.wikipedia.org/wiki/Nucleation

[Swanky]

i like old man Swanky, he is the type of guy that would get into some hard core philosophy when you are pissed at 4am

We better get smashed some time I think, lol

[AceLosesKing]

Wow, the deepest into the ocean we've been was back in 1960?

[bennymacca]

Wow, the deepest into the ocean we've been was back in 1960?

That was the first time that they went to the bottom of the Mariana trench, but they have been down there a few times since