Chemistry 0620 · IGCSE · Solids, liquids and gases

Solids, liquids and gases — practice question

Impurities alter the melting and boiling points of substances. Sodium chloride is added to a sample of pure water. How does adding sodium chloride affect the melting point and the boiling point of the water?

  • Amelting point increases, boiling point increases
  • Bmelting point decreases, boiling point decreases
  • Cmelting point increases, boiling point decreases
  • Dmelting point decreases, boiling point increases

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