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Chemistry · May / June 2025 · Paper 12 · Question 3

5070Elements, compounds and mixtures

Which statement is correct?

  1. AAll compounds are ionic.
  2. BAll compounds conduct electricity when molten.
  3. CEach atom of an element contains the same number of protons.
  4. DIn a mixture of substances, the proportions of the substances are always the same.

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Correct answer: C. Each atom of an element contains the same number of protons.

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