C1 Rocks and Building Materials

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Limestone and its uses

  • Limestone is made mainly of calcium carbonate.
  • Limestone is used as a building material and to make calcium oxide and cement.
  • Cement mixed with sand, aggregate and water makes concrete.
  • Calcium carbonate decompose when heated to make calcium oxide and carbon dioxide.

Reactions of carbonates

  • Metal carbonates decompose when heated to produce the metal oxide and carbon dioxide.
  • Carbonates react with acids to produce a salt, water and carbon dioxide.
  • Carbon


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