science vocab

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Across
  1. 4. two or more substances not chemicaly combined
  2. 6. change in velocity per unit of time
  3. 11. the amount of energy transferd
  4. 13. anything that ocupies space and has mass
  5. 15. the negitivly chared object in an atom
  6. 18. the top af a wave
  7. 20. the force that holds objectsto the earth
  8. 21. the measure of the amount of amtter in an object
Down
  1. 1. matter that takes the form of its container
  2. 2. the ability to do work
  3. 3. maximum distance a wave vibrates from it's rest position
  4. 5. a piece of metal with a north and south pole
  5. 7. process in which a liquid becomes a gas
  6. 8. test or investigation
  7. 9. the neutral charge in an atom
  8. 10. the positivly charge partical in an atom
  9. 12. any peices of info. acquired through observations and expiriments
  10. 14. force that opposes motion
  11. 16. the defining stucture of an element
  12. 17. to push or pull an object
  13. 19. matter with the most amont of energy