Chapter 5 Vocab

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Across
  1. 4. a row in a periodic table of elements
  2. 5. one twelfth the mass of a carbon-12 atom
  3. 9. the elements in group 2A of the periodic table
  4. 10. gases the elements in group 8A of the periodic table
  5. 12. the elements in group 7A of the periodic table
  6. 13. elements that form a bridge between elements on the left and right sides of the periodic table
  7. 14. elements that are poor conductors of heat and electric current
Down
  1. 1. the pattern of repeating properties displayed by elements in the periodic table
  2. 2. the elements in group 1A of the periodic table, not including hydrogen
  3. 3. an electron that is in the highest occupied energy level of an atom
  4. 6. elements with properties that fall between those of metals and nonmetals
  5. 7. elements that are good conductors of heat and electric current
  6. 8. an arrangement of elements in columns, based on a set of properties that repeat from row to row
  7. 11. a column of elements in a periodic table