redox and oxidation crossword puzzle

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Across
  1. 4. A reaction that releases energy.
  2. 6. Which part of the redox reaction gains electrons?
  3. 7. Which part of the redox reaction loses electrons?
  4. 8. What is an element that has been oxidized called?
  5. 9. What elements can oxidize other elements?
  6. 10. What is a negatively charged ion?
Down
  1. 1. What reaction shows the transfer of electrons?
  2. 2. Oxidation and reduction occur...
  3. 3. What is a reaction used in welding?
  4. 5. Positively charged ions are called...
  5. 7. Oxidation Is Less Reduction Is Gain