Chemistry - Electrolysis 1.5 / 5 based on 2 ratings ? ChemistryElectrolysisGCSEAQA Created by: baggiez_boiCreated on: 27-04-14 20:47 What is electrolysis? The process in which ionic substances are decomposed into simpler substances when an electric current is passed through them. 1 of 12 What must occur for electrolysis to happen? Ions must be free to move. 2 of 12 When is possible for the ions to be free to move? When the ionic substance is dissolved in water or when melted. 3 of 12 In electrolysis what happens when the positively charged ions move to the negative electrode? They recieve electrons and are reduced. 4 of 12 In electrolysis what happens when the negatively charged ions move to the posotive electrode? They lose electrons and are oxidised. 5 of 12 What is the electrolyte? The upstance that is broken down, 6 of 12 In electroplating what is the negative electrode? Object that is is electroplated. 7 of 12 In electroplating what is the posotive electrode? Metal you want to coat the object with. 8 of 12 In electroplating what is the electrolyte? Solution of coating metal. 9 of 12 When aluminium is purified using electrolysis what does aluminium form? The negative electrode 10 of 12 When aluminium is purified usinh electrolyis what does oxygen for? The posotive electrod. 11 of 12 Complete the equation. Oxygen + Carbon = Carbon Dioxide 12 of 12
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