The battery

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Across
  1. 4. hoas holes so sustances can pass through
  2. 6. electromotice force
  3. 7. another name for a galvanic or voltaic cell
  4. 8. break down over time
  5. 9. type of reaction that occurs at the positive electrode
  6. 11. a way for cells to lessen their decreasing performance
  7. 13. used to improve the conductivity of the positive electrode
  8. 14. not for home use
  9. 17. type of reaction that occurs at the negative electrode
  10. 18. type of cell that has both a negative and a positive electrode
  11. 19. direct current
Down
  1. 1. measures specific gravity
  2. 2. plates that divide parts of a battery
  3. 3. mixture of many metals, including mercury in a positive electrode
  4. 5. emitted by a radioactive subastance
  5. 10. flow of electrons
  6. 12. type of cell used to calibrate electrical equipment
  7. 15. not nearby
  8. 16. battery used in cars and trucks