Metals and their uses 0.0 / 5 ? ChemistryRocks, ores, metals and alloysGCSEAQA Created by: Tia WilliamsCreated on: 18-05-13 12:22 Why can gold be found in the Earth's crust in its native state? Gold is very unreactive 1 of 11 Why is aluminium extracted from aluminium ore by electrolysis? Aluminium is more reactive than carbon 2 of 11 Why is iron extracted from iron ore by reduction with carbon or carbon monoxide? Iron is less reactive than carbon. 3 of 11 What happens to iron oxide in a blast furnace? It is reduced to form iron 4 of 11 In comparison with steel, what is pure iron like? Softer 5 of 11 What is the percentage of iron in the iron from a blast furnace? 96% 6 of 11 Which type of steel is likely to be used for making cutlery? Stainless steel 7 of 11 What process is used to purify copper? Electrolysis 8 of 11 Why is titanium expensive to extract from its ore? Titanium is expensive to extract from it's ore because several stages are involved in the extraction process. 9 of 11 Phytomining involves: using plants to absorb metal compounds 10 of 11 Copper can be obtained by reacting solutions of copper compounds with scrap iron. This sort of reaction is called: The reaction is called displacement 11 of 11
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