Dynamite soap: The combustion of stoichiometric hydrogen–oxygen mixtures

By Declan Fleming2021-08-30T07:41:00

A hand igniting soap bubbles in a petri dish with a lit wooden split

Source: © Declan Fleming

Add this quick demo to the end of a lesson on squeaky pops to show the dramatic impact of mixing chemicals in the correct proportions

Testing for the ‘squeaky pop’ of hydrogen gas is one of the most quintessential and memorable chemistry experiments, but there isn’t always time to extend the practical further. That’s why having a two-minute demo like this on hand to show the dramatic impact of mixing chemicals in the correct proportions is never a bad plan.

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