For example, releasing metallic copper from a solution of copper sulfate a process called electrolysis Back in England Humphrey Davy inventor of B minors safety lamp picked up the idea of electrolysis and supercharged it.
Like, there's a little bit of filler in the Davy Back fight, and I think that one, yes, the dodgeball one is filler, but that's the best one out of all of the ones that they do anyway.