Analysing Substances 4.5 / 5 based on 3 ratings ? ChemistryAnalysing substancesGCSEAQA Created by: lydiaheathCreated on: 08-04-15 14:40 What colour flame does lithium give when burnt? Red 1 of 20 Which metal is yellow when burnt? Sodium 2 of 20 what colour does barium give when burnt? Green 3 of 20 what metal turns a flame lilac? Potassium 4 of 20 what metal turns the flame brick red? Calcium 5 of 20 What do you add to the unknown substance to test for a halide? silver nitrate and dilute nitric acid 6 of 20 what colour would it turn if it contained chloride? white 7 of 20 what does it mean if the substance mixed with nitric acid and silver nitrate went cream? it contained bromide. 8 of 20 what does it mean if the substance went yellow? it contained iodine 9 of 20 what do you add to calcium to make it a white precipitate? sodium hydroxide 10 of 20 what does it mean if sodium chloride and the unknown substance turned blue? it contained copper 11 of 20 what does Fe(II) turn to when mixed with sodium hydroxide? green 12 of 20 what does Fe(III) turn to when mixed with sodium hydroxide? brown 13 of 20 what colour does magnesium go when mixed with sodium hydroxide? white 14 of 20 what colour does aluminium go when mixed with some sodium hydroxide? white 15 of 20 how do you test if an unknown substance is a carbonate? add the dilute acid to limewater 16 of 20 what would the mixture look like for a positive reading for carbonate? milky and it fizzes 17 of 20 which substance changes colour when you add an excess of NaOH? What colour does it turn to? Aluminium- clear/colouless 18 of 20 adding barium chloride to the dilute acid is a test for what? sulphate 19 of 20 what does the mixture look like if it was positive for barium? a white precipitate 20 of 20
Comments
No comments have yet been made