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C1 Revision

C1 Revision. C1.2 Limestone and Building Materials. Limestone. Limestone is made of calcium carbonate (CaCO3) It is used in Building materials Making glass Improving the pH of acid soil. Thermal Decomposition of Metal Carbonates.

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C1 Revision

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  1. C1 Revision C1.2 Limestone and Building Materials

  2. Limestone • Limestone is made of calcium carbonate (CaCO3) • It is used in • Building materials • Making glass • Improving the pH of acid soil

  3. Thermal Decomposition of Metal Carbonates • When metal carbonates are heated they break down into a metal oxide and carbon dioxide is given off Metal carbonate Metal oxide + carbon dioxide Copper carbonate copper oxide + carbon dioxide CaCO3 CaO CO2

  4. Metal Carbonates and Acids • Metal carbonates react with acids to form salts and carbon dioxide Metal carbonate + acid salt + carbon dioxide • Limestone is damaged by acid rain

  5. Limestone Cycle Heat Limestone Carbon Dioxide Carbon Dioxide Quicklime Limewater Slaked Lime A little Water More Water

  6. Cement and Concrete • Limestone is heated with clay to make cement • Cement is added to sand and water to make mortar • Cement is added to sand, aggregate and water to make concrete • You may be asked to compare different building materials. Remember – advantages, disadvantages and your opinions

  7. Quarrying • You may be asked to consider and evaluate quarrying • Economic - money • Social – the people • Environmental - pollution

  8. Exam Tips • Describe – say what you see. Use numerical data • Explain – say why something has happened • Analyse – use results to make conclusions • Evaluate – think of advantages, disadvantages and your conclusion • Compare and contrast – make sure you compare one to the other

  9. Graphs • Use a ruler to find data from the graph • Read the question carefully – underline key information • You may need to use data from more than one graph

  10. Data • Average = mean. Add them all up and divide by the number of results • Interval – the difference between the values of the variables • Range – the difference between the highest and lowest value • Reliable – are the repeat experiments all close to each other • Repeatable – can the experiment be repeated to give similar results or pattern

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