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Acids Bases - Checkpoint

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Most people think of acids as corrosive liquids which fizz when they come into contact with solid and burn when they touch the skin. The word acid comes from the latin word acidus meaning sour. As bases neutralise acids they are sometimes described as having properties which are opposite to acids. (Cambridge Checkpoint, Peter D Riley)

Answer the following questions.
  1. Why does wine go sour faster if the cork is removed from the bottle?
  2. How do you think the term of organic acid? Give example.
  3. How is a dilute solution different from a concentrated one?
  4. Which of the following substances are bases – copper chloride, sodium hydroxide, calcium carbonate, magnesium sulphate, copper oxide, lead nitrate, sodium hydrogen carbonate?
  5. Why are bases sometimes described as opposite of acids?
  6. How are acids and bases similar?
  7. Write word equations for the reactions between:

a.      Sulphuric acid and zinc oxide
b.      Hydrochloric acid and calcium hydroxide
c.       Nitric acid and calcium carbonate
d.      Hydrochloric acid and zinc carbonate
8.    How is the neutralisation of a carbonate different from the neutralisation of an oxide or a hydroxide?

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