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Match the indicator test to its colour change

Exercise and reference answers

Matching pairs
  1. Left
    Blue litmus in acid
    Right
    Turns red
  2. Left
    Red litmus in base
    Right
    Turns blue
  3. Left
    Phenolphthalein in base
    Right
    Turns pink
  4. Left
    Methyl orange in base
    Right
    Turns yellow
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