vocabulary

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Across
  1. 2. change
  2. 4. beyond
  3. 5. iron
  4. 8. chemistry
  5. 9. within
  6. 10. good
  7. 11. mass
Down
  1. 1. 2 or more elements and is a chemical formula
  2. 3. placed
  3. 6. same atom and only one capital letter
  4. 7. write
  5. 12. oxygen