Photosynthesis

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Across
  1. 2. organisms use oxygen to break down food molecules
  2. 6. the green matter in chloroplast
  3. 7. membrane-bound cell organelles
  4. 9. reactants are converted to one or more different substances
  5. 11. a partical of matter that uniquely defines a chemical element
  6. 12. the chemical element of atomic number 8
  7. 14. smallest particle of a substance
  8. 16. plants use sunlight, water, and carbon dioxide to create oxygen
Down
  1. 1. atoms continually travel from the atmosphere to the Earth and back
  2. 3. captures chemical energy from the breakdown of food molecules
  3. 4. a substance obtained from another substance
  4. 5. a heavy colorless gas that is formed by burning fuels
  5. 8. subcellular structure that has one or more jobs in the cell
  6. 10. an organelle within the cells of plants that is the site of photosynthesis
  7. 13. A simple sugar which is an important energy source in living organisms
  8. 15. takes part and undergoes change during a reaction