Science

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Across
  1. 3. all the elements in a table
  2. 5. Push or Pull
  3. 7. forces acted on an object that does not make it move
  4. 8. Negatively charged
  5. 9. chemical substance composed of many identical molecules
  6. 10. force acting on in the opposite direction of where the object is moving
  7. 11. No charge
  8. 12. makes an object go forward
  9. 14. forces acted on an object to make it move
  10. 16. a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electrons
  11. 17. a basic part of a whole
  12. 19. Positively charged
  13. 20. Needs no medium
Down
  1. 1. makes an object go toward you
  2. 2. blended thoughrouly so you cannot see individual substances
  3. 4. Spaces of air
  4. 6. composition is not uniform
  5. 13. Has a lot of air in one area
  6. 15. ability to do work
  7. 18. Has a medium