Other questions in this quiz

2. How can you tell which white precipitate is aluminium?

  • Add water and see if it turns cloudy
  • Will dissolve in excess sodium hydroxide
  • See if it fizzes in oxygen
  • Set fire to it and see if it is a blue colour

3. What colour is the iron(III) hydroxide precipitate?

  • Brown
  • Orange
  • Green
  • Blue

4. What colour does potassium go in a flame test?

  • Yellow
  • Lilac
  • Blue
  • White

5. Give some benefits of modern instrumental methods

  • Quicker, more sensitive, more accurate, tiny samples can be tested
  • Cheaper, more sensitive and tiny samples can be tested
  • Cheaper, tiny samples can be tested
  • More sensitive, more accurate
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