Skip to content
Back to quiz
6. What is unique about aluminium?
- Nothing
- If you add excess sodium hydroxide, the precipitate will dissolve again
- It turns blue
- It turns grey
7. What steps are involved in the halide test?
- Add dilute nitric acid, add silver nitrate solution. Forms a precipitate
- Add dilute hydrochloric acid, add silver nitrate. Forms a precipitate.
- Add dilute nitric acid, add barium chloride solution. Forms a precipitate
8. What steps are involved in the sulphate test?
- Add sulphur dioxide, white precipitate should form
- Add sulphuric acid then barium chloride. If white precipitate forms, sulphate ions were present.
- Red precipitate forms
9. What colour does barium produce in flame test?
10. What three tests can you use to check for negative ions?
- Sulfate, halide and flame
- Carbonate, Hallide and Sulfate Tests
- Hydroxide, carbonate and sulfate
11. What colour does lithium produce in flame test?
- Lilac
- Blue
- Crimson
- Purple
12. What colour do chloride ions produce?
13. What colour does copper produce in hydroxide test?
- Crimson
- Blue
- Purple
- Black
14. White colour do bromide ions produce?
15. What 3 methods of flame testing can you use?
- Soak, spray, evaporate once dissolved in solution
- Spray, soak splint and use a loop of wire
- Burn, spray, soak
16. What colour does potassium produce in flame test?
17. What steps are involved in the carbonate test?
- Add dilute alkali.It should produce CO2. To check it should form a white precipitate with limewater, shows CO2 has formed.
- Add dilute acid. It should produce CO2. To check it should form a white precipitate with limewater, shows CO2 has formed.
- Add strong acid. Should produce CO2. Check by bubbling through limewater
18. What colour do iodine ions produce?
19. What colour does iron III produce in hydroxide test?
20. What colour does sodium produce in flame test?
- Red
- Crimson
- Orange
- Yellow