Physical Science Semester Exam

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Across
  1. 3. developed the plum pudding model of the atom
  2. 9. Charles's law relates this to volume
  3. 10. one of the most reactive groups on the PT
  4. 12. Boyle's law relates this to volume
  5. 14. gas turns to a liquid
  6. 16. this many valence e's to be stable
  7. 18. a sign a chemical change is occurring
  8. 19. number that determines the element's identity
Down
  1. 1. force = to weight of object's displaced fluid
  2. 2. slope when water's temperature increases
  3. 4. salt water is an example mixture
  4. 5. physical property related to mass and volume
  5. 6. halogen that needs an electron from sodium
  6. 7. electrons that determine chemical properties
  7. 8. smallest unit of this is an atom
  8. 11. one of the chemical properties
  9. 12. electrons act like these orbiting a sun
  10. 13. mass number and atomic number to find neutrons
  11. 15. subatomic particle that allows isotopes to differ
  12. 17. gases that are unreactive