• Question: What is a catalyst

    Asked by 592xygg42 to Roisin, Mark, Karen, Gavin, Michel on 14 Nov 2016. This question was also asked by 393xygg42.
    • Photo: Roisin Jones

      Roisin Jones answered on 14 Nov 2016:

      A catalyst is a chemical in a reaction that speeds up or slows down the rate of the reaction (i.e. how fast the reaction is going) without being used up itself. This means that you can sometimes use a very tiny bit of catalyst for an entire reaction, because it gets recycled in the reaction.

    • Photo: Karen

      Karen answered on 14 Nov 2016:

      It is a substance that speeds up or slows down a reaction without actually being involved in the reaction.

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