science words

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Across
  1. 4. no difference in the mixture
  2. 8. Negatively charged parts of an atom
  3. 14. positively charged part of an atom
  4. 15. furthest part of the waves
  5. 16. make up everything
  6. 19. energy to physically move an object
  7. 21. the force holding atoms together
  8. 23. the path energy takes
  9. 24. A push or pull acted upon an object
  10. 25. ray on the non visible light spectrum
  11. 26. the thickness of a substance
Down
  1. 1. a unit of measurement
  2. 2. allows no light through
  3. 3. a wave that travels without a medium
  4. 5. characteristics of an object
  5. 6. An element on the periodic table
  6. 7. The force that attracts objects
  7. 9. The neutral parts of an atom
  8. 10. Object in motion will stay in motion
  9. 11. represents elements on the periodic table
  10. 12. any disturbance from a vibration
  11. 13. forces not of equal size
  12. 17. needs a medium to travel through
  13. 18. the speed and direction of an object
  14. 20. The product after chemical reaction
  15. 22. Unit used to measure energy