Balancing Chemical Equations

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Across
  1. 4. big number
  2. 6. on the periodic table
  3. 7. #1 rule
  4. 8. equal
  5. 10. small number
Down
  1. 1. output
  2. 2. input
  3. 3. makes up elements
  4. 5. arrow
  5. 9. makes up everything