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6. What colour is the precipitate of [Iron(III)] ?
- White at first but then colourless
- Green
- Brown
- White
7. When the flame is ORANGE-RED, you're testing:
- Calcium ions
- Copper ions
- Lithium ions
- Sodium ions
8. When the flame is PURPLE, you're testing:
- Sodium ions
- Copper ions
- Potassium ions
- Calcium ions
9. When the flame is YELLOW, you're testing:
- Potassium ions
- Calcium ions
- Sodium ions
- Copper ions
10. What colour is the precipitate of [Calcium] ?
- Blue
- White at first but then colourless.
- White
- Green
11. What colour is the precipitate of [Aluminium] ?
- White
- Blue
- White at first but then colourless
- Green