Chemistry Unit 1 #2 0.0 / 5 ? ChemistryCalcium CarbonateGCSEAQA Created by: KoredeakintoyeCreated on: 26-02-14 11:55 What is Limestone? mainly calcium carbonate, CaCO3 1 of 12 Calcium carbonate breaks down when heated strongly, what is this process called? Thermal Decompostition 2 of 12 What is the equation for thermal decompostition? CaCO3>CaO+CO2 3 of 12 What other elements decompose in the same way as calcium carbonate? Magnesium, copper, zinc and sodium carbonates 4 of 12 Calcium oxides reacts with___to make____? Reacts with water to make calcium hydroxide 5 of 12 Describe the experiment used to test for carbon dioxide Solution of calcium hydroxide (limewater) bubble a gas through it and if it goes cloudy carbon dioxide is present 6 of 12 How can limestone be used to make cement? It needs to be powdered heated in a kiln with powdered clay 7 of 12 How is cement used to make mortars? Mixed with sand and clay can also add calcium hydroxide 8 of 12 How do you make concrete Mix cement sand and aggregate ( which is water and gravel) 9 of 12 Name 3 environmental problems quarrying limestone causes? Noise, destroys habitats, air pollution, unsightly tips 10 of 12 Name 4 uses if limestone? Houses, roads, dyes, neutralise acidic soil, neutralise sulphur dioxide 11 of 12 Advantages of limestone x3 Widely available, cheap, hardwearing, 12 of 12
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