C2 Chemical resources

1. What has to happen to fertilisers before they can be absorbed by plants?

  • They are injected into stems
  • They are dissolved in water
  • They are heated
  • They are ploughed into fields
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2. Why can't the temperature be too high in the Haber process?

  • The atom economy will increase
  • The ammonia will begin to break down
  • The percentage yield will be too high
  • It will cost too much

3. What building material is (only) clay used to make?

  • Glass
  • Brick
  • Cement
  • Limestome

4. When is concrete made?

  • Mixing clay with sand and small stones
  • Limestone heated with clay
  • Mixing cement, sand and small stones
  • Heating sand and clay

5. What is formed when hydrogen and nitrogen are reacted together?

  • Margarine
  • Nitrous hydroxide
  • Ammonia
  • Steel


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