Electrolysis 0.0 / 5 ? ChemistryElectrolysisGCSEAQA Created by: beccaxo_xoCreated on: 28-11-15 13:47 What do we call the charged particles in an electrolysis solution? Ions 1 of 14 What happens to the ions in an ionic compound when it melts or dissolves in water? They become free to move 2 of 14 Are metal ions positively charged or negatively charged? Positively charged 3 of 14 Which electrode are metal ions attracted to? The cathode (negative) 4 of 14 Which charged particles move in the electrolyte? Ions move through the electrolyte 5 of 14 What is formed when we electrolyse a solution of copper chloride? Copper and chlorine 6 of 14 Write the half equation that describes what happens to Cu2+ ions at the cathode Cu2+ 2e- = Cu 7 of 14 When purifying copper by electrolysis, which electrode is made of impure copper? The anode (positive) 8 of 14 What is given off at the cathode when we electrolyse potassium chloride solution? Hydrogen gas 9 of 14 What is the chemical name for common salt? Sodium Chloride 10 of 14 When we electrolyse brine, what forms at the anode? Chlorine gas 11 of 14 When we electrolyse brine, what forms at the cathode? Hydrogen gas 12 of 14 Which important alkali do we get from the electrolysis of brine? Sodium hydroxide solution 13 of 14 Give 2 uses of sodium hydroxide Detergents and ceramincs 14 of 14
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