Why does a beer sometimes freeze AFTER you take it out of the freezer? Even when the lid is still on?!
Under the right circumstances liquids can cool bellow their freezing points and remain liquid. They will freeze instantly when they are disturbed or a impurity is added.
Answers: Supercooling.
Under the right circumstances liquids can cool bellow their freezing points and remain liquid. They will freeze instantly when they are disturbed or a impurity is added.
Pure grain alcohol freezes at about -110 degrees celsius. However beer having only between 3 and 5% alcohol will probably freeze around -5 degrees so yea..
temp change
Supercooling is correct. You can also have exactly the opposite happen in some cases where you get a liquid hot enough and it will instantly boil when it's disturbed (superheating).