Awesome teachersTeachers have been getting a right kicking recently and it's not fair. So, let's hear it for the teachers who've inspired you, made you laugh, or helped you to make massive explosions in the chemistry lab. (Thanks to Godwin's Lawyer for the suggestion)
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Scaryduck LIKES EGG, Thu 17 Mar 2011, 11:18)
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Could it be...... that you had the same diminutive toothbrush-moustached chemistry teacher as me? Does Room 16 ring any bells?
The man was an absolute legend. He showed me how to set fire to a piece of glass using only lead and potassium permanganate once.
(, Tue 22 Mar 2011, 21:36, 1 reply)
At a guess, if you put the mixed powders of permanganate and lead together on a piece of glass and heat them enough,an oxidation reaction will start up, in which the metallic lead will turn to lead oxides and a lot of heat will be given out; enough to melt the glass, decompose the remaining permanganate and burn the oxygen that's released.
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The Mock TurtIe ™ --- Thinks you are a cunt, on, Wed 23 Mar 2011, 0:03,
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That sounds reasonable - easy to forget how reactive lead can be. May have to try this weekend.
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speedyballbangpots, Wed 23 Mar 2011, 12:17,
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If you're feeling brave, try it with aluminium instead of lead.(
The Mock TurtIe ™ --- Thinks you are a cunt, on, Wed 23 Mar 2011, 14:48,
closed)
That's about the size of it.Heat the lead nice and hot (not so hot it melts though), heat the potassium permanganate so it gives off oxygen, eventually the lead oxidises giving off enough heat that it starts to split up the silica in the glass.
(, Wed 23 Mar 2011, 17:21, closed)
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