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Across
  1. 3. Bond formed by shared electrons
  2. 6. Material’s opposition to current
  3. 7. Bending of waves around edges
  4. 17. Property opposing change in current
  5. 18. Acceleration of a chemical reaction
  6. 19. Opposition in an AC circuit
  7. 22. Heat transfer through contact
  8. 24. Semiconductor switching device
  9. 27. Converts AC to DC
  10. 28. Reaction that releases heat
  11. 29. Energy transfer by waves
  12. 30. Resistance to change in motion
  13. 31. Height of a wave
  14. 33. Intermediate electrical conductor
Down
  1. 1. Mass per unit volume
  2. 2. Number of cycles per second
  3. 4. Loss of electrons in a reaction
  4. 5. Reaction that absorbs heat
  5. 8. Ability to store electric charge
  6. 9. Mass times velocity
  7. 10. Allows current in one direction
  8. 11. Emission of electrons by light
  9. 12. Circuit that produces a repeating signal
  10. 13. Material with zero electrical resistance
  11. 14. Band of colors or frequencies
  12. 15. Basic on the pH scale
  13. 16. Separation by boiling point
  14. 18. Heat transfer by fluid motion
  15. 20. Measured addition to find concentration
  16. 21. Same protons, different neutrons
  17. 23. Distance between wave peaks
  18. 25. Rate at which work is done
  19. 26. Upthrust in a fluid
  20. 27. Gain of electrons in a reaction
  21. 32. Force over distance