Chemistry - Chapter 3 (P2) 4.0 / 5 based on 1 rating ? ChemistryProperties of hydrocarbonsGCSEAQA Created by: rebeccamariaCreated on: 01-04-15 07:50 What are alloys? An alloy is a mixture of metals or metals and carbon 1 of 14 Why don't we use pure iron? We don't use pure iron because, it is too bendy and soft for it to be useful 2 of 14 What do we do with the pure iron instead? CConverted into steel (which is an alloy) 3 of 14 In comparison with steel, what is pure iron like? Softer 4 of 14 Which type of steel is likely to be used for making cutlery? Stainless steel 5 of 14 Why is titanium expensive to extract from its ore? It involves several stages, for it to be extracted 6 of 14 Copper can be obtained by reacting solutions of copper compounds with scrap iron. This sort of reaction is called: Displacement 7 of 14 Which are harder, pure metals or alloys? Alloys are harder 8 of 14 Why does aluminium not corrode easily? It has a thin layer of oxide - which stops air and water from getting into the metal 9 of 14 Give 3 properties of titanium High melting point, corrosion resistant, low density 10 of 14 Give 3 properties of aluminium Light density, good conductor of electricity and heat and corrosion resistant (thin layer of oxide) 11 of 14 Property and use of low carbon steel 1) Easily shaped 2) Car bodies 12 of 14 Property and use of high carbon steel 1) Very hard and inflexible 2) Blades for cutting tools, bridges 13 of 14 Property and use of stainless steel 1) Corrosion resistant 2) Cutlery, containers for corrosive substances 14 of 14
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