combustion and chemical reaction

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Across
  1. 1. The chemical reaction between a fuel and oxygen.
  2. 3. The energy stored in the bonds of chemical compounds.
  3. 5. The process of burning a substance.
  4. 7. The reactants of a chemical reaction.
  5. 8. The heat energy released during a chemical reaction.
  6. 10. The products of a chemical reaction.
  7. 11. The colorless, odorless gas produced during combustion.
  8. 12. A substance that undergoes combustion.
Down
  1. 2. A substance that slows down or prevents a chemical reaction.
  2. 4. A compound containing hydrogen and carbon atoms, often found in fossil fuels.
  3. 6. The minimum amount of energy required to initiate a chemical reaction.
  4. 9. The substance that reacts with a fuel in combustion.
  5. 11. A substance that increases the rate of a chemical reaction without being consumed.