Chemistry

123456789
Across
  1. 2. it is Brite yellow and crystallizes in cold temperatures
  2. 5. trees produce it
  3. 6. you breth it and is found in fires
  4. 7. it helps with combustion
  5. 8. is there when there is excess oxygen
  6. 9. it is used to power up cars
Down
  1. 1. the strongest flame in an Bunsen burner
  2. 2. leftover after burning
  3. 3. you could die from it if you inhale it or in the same place as it with now glowing oxygen
  4. 4. is a clear liquid and has am earthy smell and taste bitter