science crossword

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Across
  1. 3. NaCl
  2. 4. an alloy of copper and tin
  3. 5. H2O
  4. 8. O2
  5. 9. Common breakfast mixture
Down
  1. 1. N2
  2. 2. CO2
  3. 4. copper and zinc alloy
  4. 6. common camping and hiking snack
  5. 7. Common iron and carbon alloy