Solve the puzzle

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Across
  1. 2. A bubbling column where gases and liquids mix
  2. 4. The study of moving liquids that never sit still
  3. 6. A device that keeps things hot but never burns itself
  4. 7. A workplace where molecules go to change careers
  5. 8. The art of squeezing the most out of every reaction
  6. 9. It makes reactions faster but never takes the credit
Down
  1. 1. A gas that plants love but factories release too much of
  2. 3. You can’t see it, but it’s pushing against you all the time
  3. 4. A tower that keeps the right molecules while letting others go.
  4. 5. It’s not a magic trick, but it makes liquids disappear into gas