photosynthesis

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Across
  1. 5. a substance that takes part in and undergoes change during a reaction.
  2. 6. a plastid that contains chlorophyll and in which photosynthesis takes place.
  3. 7. is an electrically neutral group of two or more atoms held together by chemical bonds.
Down
  1. 1. is sugar.
  2. 2. reaction a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
  3. 3. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
  4. 4. an article or substance that is manufactured or refined for sale.
  5. 8. O2.