Electrolysis 0.0 / 5 ? ChemistryElectrolysisGCSEAQA Created by: Hxlli7Created on: 07-11-19 16:26 Define electrolysis Using an electrical current to cause a reaction 1 of 21 What is the name of the negative electrode? cathode 2 of 21 What is the name of the positive electrode? anode 3 of 21 Where are cations (positive ions) attracted to? cathode 4 of 21 Where are the anions (negative ions) attracted to? anions 5 of 21 Are the anions or cations reduced? cations 6 of 21 What is reduction? gain of electrons 7 of 21 What is oxidation? loss of electrons 8 of 21 What is electrolysis used for? extract metals from their ores 9 of 21 What happens to metal ions? Positive ions - reduced 10 of 21 What happens to non metal ions? oxidised 11 of 21 Name the two types of electrolysis aqueous and molten 12 of 21 Why do molten substances conduct electricity? Ions can move freely to carry a charge 13 of 21 Define aqueous a solution containing water 14 of 21 When will hydrogen be produced at the cathode? (aq) metal in the compound - more reactive than hydrogen 15 of 21 Name a metal less reactive than hydrogen copper 16 of 21 Name three metals more reactive than hydrogen potassium, sodium, lithium, calcium, magnesium 17 of 21 Define halogen group 7 element 18 of 21 Name the 4 main halogens fluorine, chlorine, bromine, iodine 19 of 21 What happens when the non metal ion is in group 7? That element is produced at the anode 20 of 21 What happens when the non metal ion is not in group 7? Oxygen and water will be produced at the anode (OH- ions in the water) 21 of 21
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