C1 3.3 Aluminium and Titanium 0.0 / 5 ? ChemistryExtracting metals /The reactivity seriesGCSEAQA Created by: kieraharding1Created on: 19-12-16 12:17 What properties do Titanium and Aluminium have in common? Both strong and have a low density, don't corrode. 1 of 18 Name some properties of Aluminium. It is silvery and shiny, light as low density, good conductor, can shape it and draw into wires. 2 of 18 Why does Aluminium not corrode easily? Has a surface of atoms that react with oxygen in air. They form a layer of aluminium oxide which stops any more corrosion. 3 of 18 What can we do with Aluminium to make it stronger? Use it to form an alloys which are stronger. 4 of 18 Name some things that aluminium can be used for. Drinks cans, cooking foil, saucepans, high-voltage electricity cables, aeroplanes, bicycles. 5 of 18 How do we extract aluminium? Electrolysis. 6 of 18 What happens when extracting aluminium? An electric current is passed through molten aluminium oxide at high temperatures to break it down. 7 of 18 What is the disadvantage of using electrolysis? It is expensive. 8 of 18 Why is electrolysis expensive? We use high temperatures to melt the metal compound and we need a lot of electricity to extract. 9 of 18 Name some properties of Titanium. Silvery and white, very strong, resistant to corrosion, denser than aluminium, high melting point. 10 of 18 Does titanium have a protective oxide layer? Yes. 11 of 18 Name some uses for Titanium. bodies of aircraft and bikes, parts of jet engines, nuclear reactors, replacement hip joints. 12 of 18 Why is titanium used in artificial hip joints? It has a low density, high strength and resistance to corrosion. 13 of 18 How do we extract titanium? By displacement with carbon or a more reactive metal. 14 of 18 Why isn't using carbon to displace titanium very useful? Makes it very brittle. 15 of 18 What has to be done before the displacement of titanium? Titanium ore has to be processed by separating the titanium oxide and converting it to a chloride. The chloride is distilled to purify. 16 of 18 Why do we need electricity to make i) Aluminium ii) Titanium? i) need electricity to extract the metal in electrolysis. i) uses a lot of energy in different stages. 17 of 18 Name two processes in the extraction of aluminium that require large amounts of energy.` Using high temperatures to melt compound and then electrolysis. 18 of 18
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