Rocks and building materials
- Created by: Ellie cooper
- Created on: 02-12-12 14:34
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- Rocks and building materials
- Limestone and its uses
- Limestone is made mainly of calcium carbonate
- Limestone is used as a buildining material and to make calcium oxide and cement
- Cement mixed with sand, aggregate and water makes concrete
- Calcium carbonate decomposes when heated to make calcium oxide and carbon dioixide
- Reactions of carbonates
- Metal carbonates decompse when heated to produce the metal oxide and carbon dioxide
- Carbonates react with acids to producce a salt, water and carbon dioxide
- Carbon dioxide turns limewater cloudy
- The `limestone reaction cycle`
- Thermal decomposition of calcium carbonate produces calcium oxide and carbon dioxide
- Calcium oxide reacts with water to produce calcium hydroxide
- Calcium hydroxide is an alkali that can be used to neutralise acids
- Calcium hydroxide reacts with carbon dioxide to produce calcium carbonate
- Cement and concrete
- Cement is made by heating limestone with clay in a kiln
- Mortar is made by mixing cement and sand with water
- Concrete is made by mixing aggregate with cement, sand and water
- Limestone issues
- There are good and bad points about quarrying for limestone
- Limestone, cement and concrete are needed as building materials
- Quarrying and processing limestone and its products have negative impacts on the enviroment
- Limestone and its uses
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