Photosynthesis crossword puzzle

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Across
  1. 4. It cannot be created nor destroyed, it can only be changed.
  2. 6. Changes that occur in matter without changing its chemical composition.
  3. 8. A chemical reaction that occurs between sunlight, carbon dioxide, and water in plant cells and makes food molecules and oxygen.
  4. 10. A process where a set of substances undergo a chemical change to form a different substance.
Down
  1. 1. What carbohydrates break into.
  2. 2. Substances produced by a chemical reaction.
  3. 3. A chemical reaction where organisms use oxygen and food molecules to create carbon dioxide, water, and energy.
  4. 5. The ability to do something
  5. 7. A unit of measuring energy in food
  6. 9. Substances at the beginning of the chemical reaction.