Chapter 5

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Across
  1. 3. an electron that is in the highest occupied energy level of an atom
  2. 5. a row in a periodic table of elements
  3. 9. metals that form a bridge between elements on the left and right sides of the periodic table
  4. 10. gases the elements in group 8A of the periodic table
  5. 11. the elements in group 1A of the periodic table
  6. 13. one twelfth the mass of a carbon-12 atom
Down
  1. 1. an arrangement of elements in columns, based on a set of properties that repeat from row to row
  2. 2. the elements in group 7A of the periodic table
  3. 4. the pattern of repeating properties displayed by elements in the periodic table
  4. 6. elements with properties that fall between those of metals and nonmetals
  5. 7. a column of elements in a periodic table
  6. 8. elements that are poor conductors of head and electric current
  7. 12. elements that are good conductors of heat and electric current