Apparatus
One clean tin lid - from a sweet tin for example
Heat proof mat
Chemicals
The quantities given are for one demonstration
2-3g of potassium permanganate (potassium manganate (VII))
in the form of fine crystals
About 1cm
of glycerol (propane-1,2,3-triol)
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The Demonstration
Put 2-3g potassium permanganate on a tin lid standing on a heat
proof mat and make a well in the centre of the pile. Pour about
1 cm
of glycerol into the well. After about 20 seconds, steam is given
off and a bright pink flame is produced which burns for a few more
seconds.
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