Chemistry

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Across
  1. 1. Can be found in oranges and limes
  2. 6. The most commonly said greenhouse gas when dioxide is added after it
  3. 7. Heat going up, meathane
Down
  1. 2. The thing you put at the end of a URL after dot , sterling
  2. 3. A state of matter that are relatively close
  3. 4. What do you get when u cross one oxygen and two hydrogen
  4. 5. Bleach and washing up liquid have this in them