Chemical reaction

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Across
  1. 3. the starting substance in a chemical-
  2. 5. process when atoms rearrange
  3. 6. image or diagram
  4. 9. Tiny pieces that all matter is made of
Down
  1. 1. something made of the same atoms/group
  2. 2. atoms grouped together in a certain way
  3. 4. substance written in letter and
  4. 7. atoms
  5. 8. something observed about a substance