Chemical analysis GCSE AQA 0.0 / 5 ? ChemistryAnalysing substancesGCSEAQA Created by: jenna213Created on: 07-03-22 20:22 What metal ion has no flame colour? Most transition metals. 1 of 16 What metal ion has a yellow flame colour? Sodium. 2 of 16 What metal ion has a crimson flame colour? Lithium. 3 of 16 What metal ion has a red/orange flame colour? Calcium. 4 of 16 What metal ion has a green flame colour? Copper. 5 of 16 What metal ion has a lilac flame colour? Potassium. 6 of 16 When sodium hydroxide is added to copper (II) what colour precipitate is formed? Light blue. 7 of 16 When sodium hydroxide is added to iron (II) what colour precipitate is formed? Green. 8 of 16 When sodium hydroxide is added to iron (III) what colour precipitate is formed? Red / brown. 9 of 16 When sodium hydroxide is added to aluminium, calcium and magnesium, what colour precipitate is formed? White. 10 of 16 How can you tell a difference between aluminium and calcium? Add more sodium hydroxide. Aluminium should dissolve and calcium should form an insoluble precipitate. 11 of 16 How do you test for a carbonate? Add dilute HCl, it should fizz, then do the lime water test and the lime water should turn cloudy. 12 of 16 How do you test for a sulfate? Add dilute HCl, then add BaCl2 and a white precipitate should form. 13 of 16 How do you test for chlorine? Add dilute nitric acid and then add silver nitrate solution and a white precipitate should form. 14 of 16 How do you test for bromine? Add dilute nitric acid and then add silver nitrate solution and a cream precipitate should form. 15 of 16 How do you test for iodine? Add dilute nitric acid and then add silver nitrate solution and a yellow precipitate should form. 16 of 16
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