C1, Limestone 0.0 / 5 ? ChemistryThe limestone cycleGCSEAQA Created by: emmajane_Created on: 27-05-14 11:19 What is thermal decomposition The breakdown of calcium carbonate when heated strongly 1 of 12 What does thermal decomposition form? Calcium oxide and carbon dioxide 2 of 12 Name 3 other metal carbonates that decompose in the same way sodium carbonate, magnesium carbonate and coppor carbonate 3 of 12 What do metals high up in the reactivity series need to decompose? A lot of energy 4 of 12 What colours does Calcium oxide form when it is hot and cold? Hot= Yellow Cold= White 5 of 12 How is calcium hydroxide formed? It is reacted with calcium oxide and water 6 of 12 Name 3 purposes, apart from building, that limestone is used for Cement, motar and concrete 7 of 12 WHat happens when carbonates react with acid? It produces carbon dioxide, a salt and water 8 of 12 What is the pH like of calcium hydroxide? Wky is it useful? An Alkali pH. Therefore used to solve acid rain 9 of 12 What is an advantage and disadvantage of using concrete as a building material? A= Easily formed into different shaped and sets hard D= It doesn't look attractive 10 of 12 Name 2 advantages of limestone quarrying 1. Valubale resource, used to make concrete and glass 2. Provides jobs and brings money into local economy 11 of 12 Name 2 disadvantages of limestone quarrying 1. Quarries very visible and permenantly damage environment 2. Creates noise and heavy traffic. Ruins peoples quality of lives 12 of 12
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