C3 - Analysing Substances - Cation tests

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1. Which 3 cations produce white precipitates when NaOH is added?

  • Iron, Copper,Calcium
  • Aluminium,Calcium,Magnesium
  • Calcium, Aluminium, Copper
  • Iron, Magnesium, Aluminium
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2. Which of those precipitates dissolves in excess Sodium hydroxide?

  • Magnesium
  • Aluminium
  • Calcium

3. Which metal would produce a yellow flame?

  • Calcium
  • Sodium
  • Potassium
  • Lithium

4. Which metal would produce a green flame?

  • Calcium
  • Sodium
  • Barium
  • Lithium

5. Which metal would produce a Lilac flame?

  • Barium
  • Sodium
  • Potassium
  • Calcium

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