Chemistry 3 0.0 / 5 ? ChemistryTesting and analysing substancesGCSEAQA Created by: kelz0209Created on: 14-04-14 09:21 What metal ions would produce a lilac flame when burnt? K+ 1 of 7 What colour is the precipitate formed when sodium hydroxide is added to a solution of copper (II) ions? Blue. 2 of 7 How would you test for carbon dioxide? Bubble carbon dioxide through limewater-limewater will turn milky. 3 of 7 A bottle of a chemical solution is labelled 'iron(II)sulphate' Describe a chemical test to confirm that the solution contains iron(II)sulphate. Add sodium hydroxide solution. A green precipitate indicates iron(II) ions. 4 of 7 Describe a chemical test to confirm that the solution contains sulphate ions. Add dilute hydrochloric acid then barium chloride solution. A white precipitate indicates sulphate ions. 5 of 7 What is the chemical name for compound X? Calcium chloride. 6 of 7 What is the chemical name for compound Y? Potassium iodide. 7 of 7
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