ESCAPE ROOM

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Across
  1. 5. PQ of CPQ?
  2. 6. charge of -1
  3. 7. not pipeline
  4. 9. three+four?
Down
  1. 1. Baytown alarm system
  2. 2. toxic gas; goes with clue 5
  3. 3. the molecule of life
  4. 4. toxic gas; goes with clue 4
  5. 8. opposite of basic