C1 Topic 4: Obtaining and using metals 4.5 / 5 based on 6 ratings ? ChemistryMetals, metal ores and alloysGCSEEdexcel Created by: bridgetadjeiCreated on: 01-05-16 19:58 What are metals usually found as? Ores 1 of 23 Why is gold formed pure? It is unreactive 2 of 23 True or false: the more reactive the metal, the harder it is to extract True 3 of 23 If a metal is more reactive than carbon, how can it be extracted? Electrolysis 4 of 23 How is aluminium extracted? Electrolysis 5 of 23 If a metal is less reactive than carbon, how can it be extracted? By being heated with carbon 6 of 23 What are the products of zinc oxide + carbon after being heated? Zinc + carbon dioxide 7 of 23 What is oxidation? Gaining oxygen 8 of 23 What is reduction? Losing oxygen 9 of 23 What are the properties of metals? Good conductor of heat/electricity; malleable; strong 10 of 23 What are the properties of aluminium? Low density; resistant to corrosion 11 of 23 What is aluminium used for? Air crafts 12 of 23 What are the properties of copper? Hard/strong; high melting points; good conductor 13 of 23 What is copper used for? Cables and pipes 14 of 23 What are the properties of gold? Shiny; easy to shape 15 of 23 What is gold used for? Jewellery 16 of 23 What is rusting? The corrosion of iron or steel 17 of 23 How can rusting be sped up? Using oxygen (O2) and water (H2O) 18 of 23 What are alloys? A mixture of a metal emelent and another element (usually another metal) 19 of 23 What are the properties of pure metals? Soft; particle layers slide 20 of 23 What are the prperties of alloys? Harder than pure metals; atoms of different sizes; layers do not slide 21 of 23 What can smart alloys do? Return to their original shape 22 of 23 What are the advantages of recycling? Uses less money, energy, resources; creates less land fill 23 of 23
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