Welcome to the burp in a pot experiment! This is one you can try for yourself at home, and it has quite a dramatic result. Get an adult to help you. Be safe and stay well back when you've set it up.
What you need: HALF A SOLUBLE INDIGESTION TABLET AN EMPTY FILM CANISTER WATER
What to do:
First put a small amount of water in the film canister (just enough to cover the bottom). Then drop in the half-tablet.
Quickly put the lid on the canister and turn it upside down so it rests on the lid. Then stand back!!
It’s best to do this outdoors, or at least not near anything breakable. It might take a while but don't go back to it once you have set it up - stay well back! What do you think will happen?