Science expriment.

One of my previous science experiments was the home made bomb.

I remember one time me and my friend made a bomb out of vinegar and baking soda.
We shook the bottle that made them mix to gather and build up pressure but you had to role up the baking soda in a napkin so that it allows time for you to shake it. The last time we tried it, we had to through it on the ground for it to pop because the pressure was not strong enough.

The way it works:
The vinegar slowly leaks through the napkin to the baking soda, and reacts like a vinegar volcano when you shake it it mixes together but being in a air tight bottle the gas and froth has no where to go. So it builds up and up and up until BOOM!