Starter quiz

  • What is a reversible change?
    • A change which can be undone or changed back to its original state.  ✓
    • A change which cannot be undone or changed back to its original state.
  • Evaporation happens faster when the temperature is ...
    Evaporation happens faster when the temperature is ...
    • warmer.  ✓
    • cooler.
  • Match the reverse process of each change of state.
    Match the reverse process of each change of state.
    • melting
      freezing  ✓
    • condensation
      evaporation  ✓
  • At temperatures between 0°C and 100°C, water is in ______ state.
    • 'liquid' ✓
  • Which gas from the air is used during burning?
    Which gas from the air is used during burning?
    • carbon dioxide
    • oxygen  ✓
    • air
  • Match the process to the change of state.
    • evaporation
      when a liquid changes to a gas ✓
    • melting
      when a solid changes to a liquid ✓
    • freezing
      when a liquid changes to a solid ✓
    • condensation
      when a gas changes to a liquid ✓
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