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Chemistry (AQA Foundation)
Separating substances

Starter quiz

  • Which substances are insoluble (do not dissolve) in water?
    • sugar
    • sand  ✓
    • salt
    • flour  ✓
  • A ______ is a material that contains two or more different substances, which can be physically separated.
    • 'mixture' ✓
  • What mixture is formed when a substance dissolves in a liquid?
    • solution  ✓
    • suspension
    • insoluble
    • soluble
    • solvent
  • Match the following words to their meaning.
    • Soluble
      ⇔
      A substance which can dissolve in a liquid. ✓
    • Separate
      ⇔
      To divide something into its different parts. ✓
    • Insoluble
      ⇔
      A substance which cannot dissolve in a liquid. ✓
    • Solvent
      ⇔
      The liquid in which a solute is dissolved to form a solution. ✓
    • Solution
      ⇔
      Formed when a solute dissolves in a solvent. ✓
  • Which of the following are mixtures?
    • 'pure' orange juice  ✓
    • oxygen
    • air  ✓
    • sodium chloride (salt)
    • carbon
  • When a solid substance is insoluble, it can still form a mixture with a liquid. This mixture is called a ...
    When a solid substance is insoluble, it can still form a mixture with a liquid. This mixture is called a ...
    • 'suspension' ✓
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