Chemistry - Limestone 0.0 / 5 ? ChemistryThe limestone cycleGCSEAQA Created by: georgia0261Created on: 04-05-17 17:42 What is limestone? Limestone is mainly calcium carbonate and is formed from sea shells 1 of 20 What is limestone used for? Buildings like Cathedrals 2 of 20 What is thermal decomposition? When a substance is heated and begins to decompose. 3 of 20 What does limestone produced after thermal decomposition? When thermally decomposed limestone produces calcium oxide and carbon dioxide 4 of 20 When calcium carbonate reacts with acid what is produced? Calcium salt, Carbon dioxide and water 5 of 20 What two substances react together to produce calcium hydroxide? Calcium oxide and water 6 of 20 What do you mix to get limewater? Calcium hydroxide and water 7 of 20 How can you test for co2? Blow bubbles into the limewater and if it turns cloudy, Co2 is present 8 of 20 Calcium hydroxide + Carbon dioxide = ? Calcium carbonate + water 9 of 20 How is cement produced? Limestone is heated in a kiln with powdered clay 10 of 20 How is mortar produced? Cement is mixed with sand and water 11 of 20 How is concrete made? Cement is mixed with sand and aggregate 12 of 20 What does quarrying limestone leave in the ground? Large ugly holes that change the landscape 13 of 20 What does quarrying destory for some animals? Their habitats 14 of 20 What does quarrying cause in scenic areas? Loud noise and dust 15 of 20 What does the transport of limestone cause? Noise and pollution due to the large lorries 16 of 20 What do cement factories cause? Dust which leads to breathing problems 17 of 20 What provides the energy to produce cement? Burning fossil fuels 18 of 20 What does limestone do to rivers and lakes affected by acid rain? Limestone neutralizes acidity 19 of 20 What is good about limestone as a material? It is cheap, easy to cut out and more hard wearing than marble 20 of 20
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