Chemistry 0620 · IGCSE · Elements, compounds and mixtures

Elements, compounds and mixtures — practice question

Petroleum is a mixture of compounds. Which elements occur in all of these compounds? 1 carbon 2 hydrogen 3 oxygen

  • A1, 2 and 3
  • B1 and 2 only
  • C1 and 3 only
  • D2 and 3 only

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