Chemistry 1.2 mindmap
- Created by: ajwhitlam
- Created on: 04-10-15 19:48
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- Chemistry 1.2
- Composition
- Composed of calcium, carbon and oxygen.
- CaCO3
- Composed of calcium, carbon and oxygen.
- Uses and Issues regarding limestone.
- Cement based materials
- Made from limestone heated with clay in a kiln.
- Then can be mixed with sand to make mortar
- Also can be mixed with sand and aggregate to make concrete.
- Concrete is stronger than mortar.
- Then can be mixed with sand to make mortar
- Concrete is stronger than mortar.
- Cement based materials
- Limewater can be used as a test for carbon dioxide.
- Insoluble calcium carbonate will form if CO2 is passed through it and the water will turn cloudy.
- Equation
- CO2 + Ca(OH)2 -> CaCO3 + H2O
- Equation
- Insoluble calcium carbonate will form if CO2 is passed through it and the water will turn cloudy.
- Limewater can be used as a test for carbon dioxide.
- Quarrying
- Advantages
- Quarries to mine out limestone provide jobs, boost money in the area, leading to better facilities.
- Roads will be improved in the local area to accommodate for the quarry's trucks.
- Disadvantages
- Quarries can be an eyesore.
- Quarries can pollute the surrounding area.
- More traffic on the roads.
- Added noise from blasting.
- Advantages
- Forms of Limestone
- Quicklime (Calcium oxide)
- Equations
- CaCO3 -> CaO + CO2
- Calcium carbonate -> carbon oxide +carbon dioxide
- Created by thermal decomp-osition of limestone
- (By heating)
- Reacted with water to create...
- Slacked lime (Calcium hydroixide)
- Also known as 'limewater'
- Equations
- CaO + H2O -> Ca(OH)2
- Calcium oxide + water -> calcium hydroxide
- Compound = Ca(OH)2
- 2 OH molecules joined with 1 Ca atom.
- Limewater can be used as a test for carbon dioxide.
- Insoluble calcium carbonate will form if CO2 is passed through it and the water will turn cloudy.
- Equation
- CO2 + Ca(OH)2 -> CaCO3 + H2O
- Equation
- Insoluble calcium carbonate will form if CO2 is passed through it and the water will turn cloudy.
- Limewater can be used as a test for carbon dioxide.
- Slacked lime (Calcium hydroixide)
- Equations
- Slacked lime (Calcium hydroixide)
- Also known as 'limewater'
- Equations
- CaO + H2O -> Ca(OH)2
- Calcium oxide + water -> calcium hydroxide
- Compound = Ca(OH)2
- 2 OH molecules joined with 1 Ca atom.
- Cement based materials
- Made from limestone heated with clay in a kiln.
- Also can be mixed with sand and aggregate to make concrete.
- Concrete is stronger than mortar.
- Concrete is stronger than mortar.
- Quicklime (Calcium oxide)
- Composition
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