professorial fail in part 1 - adding hydrogen peroxide to the solution - in effect
avoids a highly exothermic reaction, visible in the second video.
And no wonder: hydrogen peroxide is a rocket propellant, and was used to power
torpedoes in the Second World War. Which seems to be the point here, the peroxide
which is two oxygen radicals together, is highly volatile.
As for the purple permanganate, this is due to charge transfer wherein - instead
of forming a covalent bond - only part of a charge is transferred. The molecule as whole
is more stable but in a highly excited state!!
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