• Question: what is your favorite experiment

    Asked by anon-174902 to Yewande, Tim, Melanie, Hayley, Alex on 18 Jun 2018. This question was also asked by anon-174907.
    • Photo: Alex Seeney

      Alex Seeney answered on 18 Jun 2018:

      When I studied chemistry at school, we did an experiment called “screaming jelly babies”. You put a jelly baby in a test tube with some potassium chlorate – the sugar in the jelly baby oxidises really quickly, causing it to burst into flames, and making a “screaming” sound as the gases rapidly expand. It’s great fun to watch!

    • Photo: Melanie Hannah

      Melanie Hannah answered on 19 Jun 2018:

      I have loads of favourite!
      The periodic clock is good fun as it uses a magnetic stirred which is always fun. (BRIGGS-RAUSCHER) A mixture of chemicals that change colour as it stirs, as it is a reversible oscillating reaction, demonstrating rates of reaction and equilibrium

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