Chemistry C1 2.1 Limestone and its uses. 0.0 / 5 ? ChemistryThe limestone cycleGCSEAQA Created by: Atlanta and JacobCreated on: 20-04-16 19:48 What is limestone mainly made of? Calcium carbonate. 1 of 15 What is limestone used for? As a building material and to make calcium oxide and cement. 2 of 15 What makes concrete? Cement mixed with sand, aggregate and water. 3 of 15 What does calcium carbonate decompose when heated to make? Calcium oxide and carbon dioxide. 4 of 15 Why do we quarry large amounts of limestone rock? Because it has many uses. 5 of 15 Wat can blocks of limestone be used for? Building. 6 of 15 What is used to make calcium oxide and cement? Limestone. 7 of 15 What does mixing cement with sand, aggregate and water make? Concrete. 8 of 15 What is mainly calcium carbonate, CaCO_(3)? Limestone. 9 of 15 What happens to calcium carbonate when it is heated strongly? It decomposes to make calcium oxide and carbon dioxide. 10 of 15 How is calcium carbonate heated to make calcium oxide and carbon dioxide on a large sale? In lime kilns. 11 of 15 What is the equation for the reaction when calcium carbonate is strongly heated? Symbol equation = CaCO_(3) (arrow symbol) CaO+CO_(2) word equation = calcium carbonate (arrow symbol) calcium oxide + carbon dioxide. 12 of 15 How are limestone and products made from limestone used in the building industry? As building blocks, to make calcium oxide and to make cement. 13 of 15 What is the term used for 'breaking down by heat'? Thermal decomposition. 14 of 15 What is thermal decomposition? Breaking down by heating. 15 of 15
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