Chemistry Stuff

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Across
  1. 3. scientist who discovered the atom's nucleus
  2. 7. information collected directly with the senses
  3. 9. how the periodic table was originally arranged
  4. 12. group name of elements with 7 valence electrons
  5. 13. number of letters NOT on the periodic table
  6. 15. most important personal protective equipment
  7. 16. "You must be able to tell any 2 electrons apart!"
  8. 19. elements that are NOT filling their valence energy level
  9. 20. technology used in nuclear power plants
  10. 21. Alkaline earth metal with 4 total energy level
  11. 23. vertical column on the periodic table
  12. 24. figured out that electrons lived in specific energy levels
Down
  1. 1. molecular shape of carbon dioxide
  2. 2. number of nonmetals with a 1 letter atomic symbol
  3. 4. measures mass in the lab
  4. 5. elements found on the stair step line
  5. 6. ion with a positive charge
  6. 8. element found in pencils and diamonds
  7. 10. number of particles in 1 mole
  8. 11. type of bond formed between sodium and chlorine
  9. 14. one intensive property
  10. 17. alkali metal with a 1 letter atomic symbol
  11. 18. inversely related to frequency
  12. 22. only metal that is liquid at room temperature