steve-o

i figured out how that corona froze when the dude opened it. I'm pretty sure it was "super cooled." This means it was colled past it's freezing point, but because there weren't any impurities in the bottle (or it wasn't disturbed) it stayed in liquid form. When he opened it, or tapped it or whatever, the agitation allow a nulceus of crystallization to form, which quickly spread through the entire bottle.

the same process can work in reverse, where a liquid is heated bast it's boiling point but doesn't actually boil until agitated. If you put a new pyrex container full of water in the microwave, it will heat past the boiling point, agitating it (by shaking it or putting a spoon in it or adding cocoa mix) will cause it to violently vaporize (partially) boiling all over the place. supposedly this is why you shouldn;t microwave water, because it can pass the boiling point without notice and the boil over when you touch it and burn you severely, if you search these things on wikipedia or youtube you can find some cool videos.

ok. drunken science lesson complete.