In this video the Coca Cola seems to freeze spontaneously after the man opens the bottle. Apparently it’s a special type of Coca Cola that you can only get in certain parts of the world.
[youtube j07SweYJTSM]The Coke is “supercooled” (when a liquid is brought below its freezing point without crystallizing). When a liquid is cooled below its freezing point it will turn into ice and want to expand. The vending machines in this video cool the coke a few degrees below its freezing point, but the bottle provides constant pressure which prevents the liquid from expanding and thus ice cannot form. When the bottle is open, the coke has room to expand… and ice forms.
[youtube fSPzMva9_CE]A supercooled liquid can stay supercooled until it is agitated… then it turns into ice.
