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17 December, 03:52

5. Describe a chemical indicator. What is it? What is it used for? How does it work?

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  1. 17 December, 04:11
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    Litmus paper, determine the acidity/alkalinity of a solution, turns red on acids and blue on alkaline while naturally purple
  2. 17 December, 04:18
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    Litmus paper, determine the acidity/alkalinity of a solution, turns red on acids and blue on alkaline while naturally purple.
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