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Chemistry · Oct / Nov 2023 · Paper 12 · Question 15

5070Physical and chemical changes

Physical changes and chemical changes can occur in substances. Which process describes a chemical change?

  1. Acovalent bonds in methane molecules are broken
  2. Bintermolecular attractions between water molecules are broken
  3. Cionic bonds in a sodium chloride lattice are broken
  4. Dthe manufacture of brass from copper and zinc

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Correct answer: A. covalent bonds in methane molecules are broken

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