Chemistry: Year 10 Term 1: Extraction of Aluminium 0.0 / 5 ? ChemistryElectrolysisGCSEAQA Created by: Charlotte HerondaleCreated on: 19-10-18 13:31 Name 3 uses of aluminium (3) Pans; Car bodies; Power cables 1 of 11 How reactive is aluminium? (1) Quite reactive 2 of 11 What does this mean in terms of extraction? (2) It cannot be displaced using carbon so electrolysis must be used 3 of 11 What is the ore of aluminium called and what does it contain lots of? (2) Bauxite, Al2O3 (aluminium oxide) 4 of 11 To melt Al2O3 what must be added to it to reduce the melting point? (1) Cryolite 5 of 11 Why is this useful? (2) Reducing the melting point reduces the energy required 6 of 11 What forms at the cathode? (1) Aluminium 7 of 11 What forms at the anode? (1) Oxygen 8 of 11 Where is the Al collected and why? (2) At the bottom as the bottom lining of the cell is negative 9 of 11 What is oxidised/reduced in the electrolysis of Al2O3? (2) Al - reduced; O - oxidised 10 of 11 The anodes are made of what, producing what gas? (2) Carbon, CO2 11 of 11
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