Electrolysis 0.0 / 5 ? ChemistryElectrolysisGCSEOCR Created by: _elliemaycoleCreated on: 18-04-15 19:34 What is electrolysis? The flow of charge by moving ions. 1 of 10 What happens to the negative cathode in the purification of copper? It gains mass as pure copper is plated onto it. 2 of 10 What is the only thing that affects the number of ions discharged? The amount of charge transferred. 3 of 10 Where do positive ions move toward? The cathode. 4 of 10 What happens when ions reach the electrodes and are discharged? They turn into atoms or molecules. 5 of 10 Hydrogen and and chlorine are reactive, so why is it important to use inert electrodes? So the products don't react before they are collected and the electrodes do not dissolve. 6 of 10 What happens to the positive anode in the purification of copper? It loses mass as the copper dissolves. 7 of 10 Why does the concentration of the copper(II) sulfate electrolyte stay the same? As the impure copper anode dissolves, pure copper is plated onto the cathode at the same rate. 8 of 10 Where do negative ions move toward? The anode. 9 of 10 Does the anode OR the cathode look like a carrot? Anode 10 of 10
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