Combustion and Chemical Reaction

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Across
  1. 2. A connection that holds atoms together in a molecule.
  2. 6. The act of starting a fire.
  3. 8. Two or more atoms bonded.
  4. 9. Something speeds up a chemical reaction
  5. 11. The ability to do work or make change.
  6. 12. Basic stubstances made of only one kind of atom.
  7. 13. What you get from a certain process or experiment.
  8. 15. A reaction that gives off heat to its surroundings.
  9. 16. How hot or cold something is
  10. 18. What is left over after something is used, burned, or removed.
  11. 19. When a substance gains electrons.
  12. 20. Gases and bits from burning.
Down
  1. 1. When a substance loses electrons.
  2. 3. A gas we breathe that helps things burn.
  3. 4. A reaction that takes in heat from its surroundings.
  4. 5. Stuff that burns to make heat or energy.
  5. 7. The ingredients of a chemical reaction.
  6. 10. The bright, hot, glowing part on fire
  7. 14. The process in which something is burned
  8. 17. A compound of hydrogen and carbon mixed together.