I know there’s carbonation in a liquid that can get out via nucleation sites.
But what is there about the shaking of a liquid that causes the rush of fizz?
I open a bottle of seltzer that was sitting on the shelf. I usually get a small amount of bubbling. However if I open a different bottle that has recently been shaken or dropped, and allowed to sit for a few seconds, I get far more fizz.
Next - We’ve all done this; put your thumb over the end of an open bottle of (not stale) soda. Give a good shake and now squirt your friends!
What exactly is going on?