Combustion Crossword

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Across
  1. 1. A lit candle produces _________ and light.
  2. 3. Gas that makes a lit candle burn brighter.
  3. 7. A fire that’s getting bigger.
  4. 8. The movement of air.
  5. 11. Equipment used to pump air into an oven.
  6. 12. This turns white when mixed with carbon dioxide.
Down
  1. 2. Percent of oxygen in air.
  2. 4. Another way to say “put out” a fire.
  3. 5. Combustion needs heat, oxygen and _________.
  4. 6. A fire that’s dying down.
  5. 9. Gas that is in about four fifths of air.
  6. 10. Your olfactory sense picks this up.