Chemistry 0.0 / 5 ? ChemistryAcids, bases and saltsElectrolysisGCSEAQA Created by: Claire_SextonCreated on: 21-04-15 18:54 What are alkalis? Alkalis are bases that dissolve in water. 1 of 12 Which salt is made when calcium carbonate reacts with hydrochloric acid? Calcium chloride is made when calcium carbonate reacts with hydrochloric acid. 2 of 12 Lead chloride is insoluble. It can be made by mixing solutions of: Lead Chloride can be made by mixing lead nitrate and sodium chloride. 3 of 12 What is the symbol Equation for neutralisation? The symbol equation for neutralisation is H+ (aq) + OH-(aq) → H2O (l) 4 of 12 What happens during electrolysis? During electrolysis gases may be given off or metals deposited at the electrodes. 5 of 12 What happens when copper is purified by electrolysis? When copper is purified by electrolysis the positive electrode is impure copper. 6 of 12 What happens during electrolysis? During electrolysis ions lose electrons at the positive electrode and are oxidised. 7 of 12 What happens when electroplating a metal spoon with silver? When electroplating a metal spoon with silver the silver should be the positive electrode. 8 of 12 What is the correctly balanced half-equation for the production of chlorine gas? 2Cl- → Cl2 + 2e- 9 of 12 What type of structure do diamond and graphite have? Diamond and graphite have a giant molecular structure. 10 of 12 Why might fullerenes be used in new drug delivery systems? Fullerenes are hollow. 11 of 12 In what physical state or states do ionic substances conduct electricity? Ionic substances conduct electricity when in a liquid state or dissolved in water. 12 of 12
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