Atoms and The Periodic Table

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Across
  1. 1. named neutrons
  2. 3. vertical columns of elements on the periodic table
  3. 4. utilized gold foilexperiment involving alpha particles;theorized that atoms had a dense core which was a positive nucleus
  4. 9. has a negative charge
  5. 11. theorized that electrons were orbiting the nucleus
  6. 13. used cathode ray to detect electrons and theorized that electrons were embedded in nuclei of atoms (chocolate chip model)
  7. 14. theorized that atoms are too small to be seen with eye, are made up of only 1 kind of atom
Down
  1. 2. initiated term “atoms” and stated that atoms could not be divided
  2. 5. are generally located on the left side of the zigzag line
  3. 6. has a positive charge
  4. 7. horizontal rows on the periodic table
  5. 8. has no charge
  6. 10. are found along this zigzag line
  7. 12. with the exception of Hydrogen (H), are located on the right side of the zigzag line on the periodic table