Redox reactions

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Across
  1. 4. Loss of electrons
  2. 5. A substance that adds oxygen
  3. 6. Process of burning something
  4. 8. when bonded with Chlorine it becomes salt
  5. 9. NH3
  6. 10. No oxygen,but electrons transfered
Down
  1. 1. Gain of electrons
  2. 2. Clue for finding oxidation or reduction
  3. 3. middle of periodic table
  4. 7. A substance that removes oxygen