Science

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Across
  1. 2. / motion of charged particles
  2. 7. / chemical substance changes because of the addition of oxygen
  3. 9. / force exerted by surfaces when objects are in contact
  4. 13. /material through which electrical charges
  5. 14. / tightly packed a substance's molecules
  6. 15. /maximum distance the particles
Down
  1. 1. / Energy being used, in motion
  2. 3. / requires a medium through which to travel
  3. 4. /parallel to the direction in which the wave travels
  4. 5. /combination of two or more electrochemical
  5. 6. / tendency of an object to resist any change
  6. 8. / energy stored between the particles
  7. 10. / basic SI unit of energy
  8. 11. / force that pulls objects toward each other
  9. 12. / unit of measurement