Combustion Crossword

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Across
  1. 2. Your olfactory sense picks this up.
  2. 4. Combustion needs heat, oxygen and _________.
  3. 5. Percent of oxygen in air.
  4. 8. A fire that’s getting bigger.
  5. 11. A lit candle produces _________ and light.
  6. 15. A glass cup used for science experiments.
  7. 16. Gas that is in about four fifths of air.
  8. 17. A fire that’s dying down.
  9. 19. The C of CO2
Down
  1. 1. Another word for burn.
  2. 3. You should do this when you smell something in Science.
  3. 6. This turns white when mixed with carbon dioxide.
  4. 7. The movement of air.
  5. 9. Something that smells beautiful when burned.
  6. 10. The tip of a spray can.
  7. 12. Another way to say “put out” a fire.
  8. 13. Gas that makes a lit candle burn brighter.
  9. 14. Something that shows the presence of something
  10. 15. Equipment used to pump air into an oven.
  11. 18. One of the three states of matter: solid, liquid and ______.