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Use indicators to identify acids, alkalis and naural sunstances.

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Use indicators to identify acids, alkalis and naural sunstances.

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Acids, Alkalis and Neutral Substances
  1. They are liquids.
  2. They are solutions of compounds in water.
  3. If concentrated they can be corrosive.
  4. Acids taste sour (for example, vinegar).
  5. Turn blue litmus paper red - this is an easy test for an acid!
  6. Usually react with metals to form salts.
  7. Acids contain hydrogen ions.

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