Chapter 5

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