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Chemistry
Copeland
23 February, 12:38
Why indicators are important?
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Lucas Sloan
23 February, 16:18
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Indicators are special chemical compounds which change their colour or odour when they are introduced to acid, alkali or salt.
for example, red cabbage extract, litmus paper, methyl orange, phenolphthalein.
they are used to indicate a certain compound is acidic, basic or normal.
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