How come when you hit a beer bottle on top of another it causes it to overflow?

Question

Seen this happen many times, never wondered about how it works till this moment.

In: Physics

Answer 1

You’re causing the carbon dioxide to nucleate, which sort means that the dissolved gas bubbles grow bigger. As the bubbles become bigger they are much less dense than the liquid around them so the rise to the surface pretty fast. As they do they bring up some of the liquid with it as they push up and this spills out of the bottle.