Chemical Reactions and Equations
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Questions and Answers

Which of the following is a chemical reaction?

  • Boiling water
  • Melting ice
  • Mixing salt and sugar
  • Burning wood (correct)

    • What is the product of the chemical reaction between hydrochloric acid and sodium hydroxide?

  • Salt
  • Oxygen
  • Carbon dioxide
  • Water (correct)

    • Which of the following is a balanced chemical equation?

  • 2H2 + O2 -> 2H2O
  • H2O -> H2 + O2
  • CaCO3 -> CaO + CO2
  • CH4 + 2O2 -> CO2 + 2H2O (correct)

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