Ch 4&5 Vocab

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Across
  1. 4. elements in the center of the periodic table
  2. 6. an element that is not reactive because it has a full outer shell
  3. 7. a group of elements that has 1 valence electron as atoms
  4. 10. a family of elements that makes a -1 charge as ions
  5. 13. the location where an electron is likely to be found
  6. 14. a particle of light energy
  7. 15. the number of these determines the identity of the atom
  8. 16. an atom that has a different number of neutrons so a different mass
  9. 17. an element found on the left side of the periodic table
Down
  1. 1. an electron in the outermost shell of an atom
  2. 2. has mass but doesn't have a charge
  3. 3. contains the mass of the atom
  4. 5. a horizontal row of the periodic table
  5. 7. on the periodic table this is equal to the number of protons
  6. 8. has a negative charge and essentially no mass
  7. 9. an atom that has gained one or more electrons
  8. 11. an atom that has lost one or more electrons
  9. 12. a vertical column of the periodic table