Atoms

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Across
  1. 1. when subtracted with protons gives you the electrons
  2. 4. Goes horizontal on a periodic table
  3. 7. Model called plum pudding model
  4. 9. Planetary model
  5. 10. on the far right side of the periodic table
  6. 12. Model The theory we use today
  7. 14. Elements that are alike each other
  8. 15. The inside an atom, holds neutrons and protons
  9. 16. very negative
  10. 17. Always make sure the first letter is uppercase
  11. 18. Very positive
Down
  1. 2. Electron cloud
  2. 3. Resembles a planet orbiting the sun
  3. 5. Model states that atoms are smooth hard balls
  4. 6. table A table that holds all the known elements
  5. 8. Sweden in ww2
  6. 11. Tells you the number of atoms
  7. 12. The periodic table has many of these
  8. 13. An element in it's own category
  9. 16. Full of atoms