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6. When you add acid to calcium carbonate you get:

  • salt, carbon dioxide, water
  • Bubbles!
  • a calcium salt, carbon dioxide
  • a calcium salt, carbon dioxide, water
  • salt and water

7. Quarrying limestone messes up the landscape

  • True
  • False

8. Quarrying limestone releases carbon dioxide into the atmosphere

  • False
  • True

9. Cement factories make lots of dust

  • True
  • False

10. limestone is ----------- so it neutralises soil high in -----------

  • alkaline, alkali
  • acidic, alkali
  • alkaline, acid
  • acidic, acid

11. To make Cement into mortar we:

  • mix it with clay and sand
  • Mix it with sand and water
  • Do nothing, they are the same.
  • mix it with clay and water

12. To make cement into concrete we:

  • Mix it with sand and aggregate
  • Heat it with clay and aggregate
  • Heat it with sand
  • Mix it with clay and aggregate
  • Heat it to make it set