• Question: Why does litmus go red when mixed with acidic substances but blue when heated in water?

    Asked by jay to Huma, Jack, Lucy, Miranda, Peter on 17 Nov 2016.
    • Photo: Miranda Bane

      Miranda Bane answered on 17 Nov 2016:

      It’s is designed that way so that you can’t tell the difference. It’s very clever but I don’t know exactly how it works.

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