Limestone revision

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  • Limestone
    • Quarrying
      • Positives
        • Making concrete when burnt and mixed with appropriate amounts of clay
        • Limestone of suitable quality is a good dimension stone which can be used for building
      • Negatives
        • Noisy, unsightly and often located in sites of outstanding natural beaty such as the peak district or dales national parks in the UK
        • need large volumes of heavy lorries Destruction of existing habitat and destruction of rare karst and cave systems
    • Calcium carbonate
      • when heated breaks down to form calcium oxide and carbon dioxide
      • Calcium oxide reacts with water to produce calcium hydroxide
      • Calcium carbonate breaks down when heated strongly. This reaction is calledthermal decomposition
        • Other metal carbonates decompose in the same way, including:sodium carbonatemagnesium carbonatecopper carbonate


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