Edexel Core Chemistry

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Author:
across2015
ID:
289190
Filename:
Edexel Core Chemistry
Updated:
2014-11-14 16:01:48
Tags:
Limestone
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Description:
Limestone
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  1. How is limestone extracted?
    Quarrying
  2. What are the advantages of limestone quarrying?
    • Provides jobs for local people
    • Provides money for the local economy
  3. What are the disadvantages of limestone quarrying?
    • Noise pollution
    • Dust pollution
    • Eyesore
    • Increased traffic
    • Destroys animals habitats
  4. What can limestone be used as a raw material for?
    • Glass
    • Concrete
    • Cement
  5. Which reaction uses heat to breakdown a metal carbonate?
    Thermal Decomposition
  6. What is the word equation for the thermal decomposition of calcium carbonate?
    Calcium carbonate --> Calcium oxide and Carbon dioxide
  7. Which product is produced when you react calcium oxide with water and what would you observe?
    • Calcium hydroxide Ca(OH)2
    • Observations: steam and fizzing
  8. What do you produced when you dissolve calcium hydroxide in water?
    Limewater
  9. Describe how to test for carbon dioxide
    Bubble through limewater and it will turn cloudy
  10. Why do farmers use calcium hydroxide?
    To neutralise the acidic soil
  11. Why is calcium carbonate used in power stations?
    To neutralise the acidic waste gases
  12. What does the formula CaCO3 tell us?
    • 1 calcium atom
    • 1 carbon atom
    • 3 oxygen atoms

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