Calcium carbonate

toby_brown
Mind Map by toby_brown, updated more than 1 year ago
toby_brown
Created by toby_brown over 6 years ago
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GCSE Chemistry (C1) Mind Map on Calcium carbonate, created by toby_brown on 07/05/2013.
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Calcium carbonate
1 Limestone is mainly made up of the compound: Calcium carbonate (CaCO3)
1.1 It is quarried and used as a building material
2 When heated, Calcium Carbonate thermally decomposes to make calcium oxide and carbon dioxide
2.1 Carbonates such as: magnesium, copper, zinc, Calcium and Sodium decompose in a similiar way by heating.
2.2 Calcium oxide reacts with water to produce Calcium hydroxide which can be used to nuetralise acids
2.2.1 Used to neutralise acid soils
2.2.2 A solution of calcium hydroxide in limewater reacts with CO2 in the air to produce Calcium carbonate.
2.2.2.1 Limewater is used as a test for CO2. CO2 turns limewater cloudy
3 Carbonates react with acids to produce CO2, a salt and water
3.1 Limestone is damaged by acid rain
3.2 Other carbonates that react with acid are: magnesium, copper, zinc and sodium
3.3 the type of salt produced depends on the type of acid
4 Powdered limestone is heated with powdered clay to make cement
4.1 Cement can be mixed with sand and water to make a mortar. Mortar is what is used to stick bricks together
4.2 Cement can be mixed with aggregate (water and gravel) to make concrete
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