Tests for substances, and ions in ionic compounds. 0.0 / 5 ? ChemistryTesting and analysing substancesIGCSEEdexcel Created by: HannahCopnerCreated on: 16-05-18 13:24 How do you test for a carbonate? (CO3 2-) Add acid and CO2 is produced 1 of 23 How do you test for Lithium? (Li +) Dip wire into concentrated HCl acid, then solid compound and put into Bunsen flame => Crimson flame 2 of 23 How do you test for Sodium? (Na +) Dip wire into concentrated HCl acid, then solid compound and put into Bunsen flame => Yellow flame 3 of 23 How do you test for Potassium? (K +) Dip wire into concentrated HCl acid, then solid compound and put into Bunsen flame => Purple flame 4 of 23 How do you test for Calcium? (Ca 2+) Dip wire into concentrated HCl acid, then solid compound and put into Bunsen flame => Brick-red flame 5 of 23 How do you test for Barium? (Ba 2+) Dip wire into concentrated HCl acid, then solid compound and put into Bunsen flame => Green flame 6 of 23 How do you test for Ammonium? (NH4 +) Add sodium hydroxide and warm test gas w/ red litmus paper - turns blue. 7 of 23 How do you test for Copper? (Cu 2+) Add sodium hydroxide - blue precipitate. 8 of 23 How do you test for Iron II? (Fe 2+) Add sodium hydroxide - dark green precipitate 9 of 23 How do you test for Iron III? (Fe 3+) Add sodium hydroxide - rusty brown precipitate 10 of 23 How do you test for chloride? (Cl -) Add dilute nitric acid and then silver nitrate - white precipitate 11 of 23 How do you test for bromide? (Br -) Add dilute nitric acid and then silver nitrate - cream precipitate 12 of 23 How do you test for iodide? (I -) Add dilute nitric acid and then silver nitrate - yellow precipitate 13 of 23 How do you test for sulphate? (SO4 2-) Add dilute HCl acid then barium chloride - white precipitate 14 of 23 How do you test for oxygen? Glowing splint - relight 15 of 23 How do you test for Hydrogen? Lit splint - sqeaky pop 16 of 23 How do you test for carbon dioxide? Lit splint - goes out 17 of 23 How do you test for chlorine? Damp blue litmus paper - red then bleached 18 of 23 How do you test for ammonia? Damp red litmus paper - blue OR forms white smoke when close to concentrated HCl acid 19 of 23 How do you test for water? Melts 0 C, boils 100 C. Turns anhyrous copper (II) sulphate crystals blue 20 of 23 How do you test for alkenes? (vs alkanes) Add bromine water - turns colourless 21 of 23 How do you test for copper carbonate? Heat and it changes from green to black + CO2 produced 22 of 23 How do you test for zinc carbonate? Turns yellow when heated (turn while again when cooled) 23 of 23
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