crossword

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Across
  1. 2. colorless transparent odorless liquid
  2. 3. chemical reaction
  3. 7. living organism involing the production of energy
  4. 8. organell found in large number of most cells
  5. 9. colorless odorless reactive gas
  6. 11. light from sun
  7. 12. a substance wich participate in a chemical reaction
  8. 13. energy molocule
Down
  1. 1. colorless odorless gas
  2. 4. a organell in plants
  3. 5. involves green pigment chlorophyll and generates oxygen
  4. 6. inside
  5. 9. outside
  6. 10. energy of body cells