"Screaming jelly babies"
is a chemistry
demonstration which is practised in schools
in the United Kingdom
. It is often used at open evenings to demonstrate the more light-hearted side of secondary school science.
The experiment shows the amount of energy there is in a "jelly baby". Potassium chlorate is a very strong oxidizing agent that oxidizes the sugar in the jelly baby all at once.
When the experiment is performed, the jelly baby bursts into flames and makes a screaming sound. The smell of candy floss is also given off.