Chemistry : Rocks and Building materials

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  • Created by: Bexxmay
  • Created on: 04-04-14 15:31
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  • Rocks and Building Materials
    • Limestone and its uses:
      • CaCO  ---> CaO + CO
        • Calcium Carbonate--> Calcium oxide + Carbon dioxide
      • Thermal Decomposition
    • Reactions of Carbonates
      • Metal carbonates decompose to the metal oxide and carbon dioxide when heated.
      • acids+ Carbonates = salt, water and carbon dioxide
      • Calcium hydroxide solution: Lime water
    • The ' LIMESTONE REACTION CYCLE'
      • CaCO  - Ca0 + CO
        • CaO + H  O --> Ca ( OH)
          • Calcium oxide + water ---> Calcium hydroxide solution.
        • Calcium Carbonate --> Calcium Oxide + Carbon Dioxide
    • Cement and Concrete
      • Cement : Limestone is mixed with clay and heated strongly
      • Motar: Cement is mixed with sand and water
      • Concrete: Add aggregate to cement , sand and water
        • Arrigate: small stones or crushed rocks

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