Chapter 9 Crossword by Katie Hoffman

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Across
  1. 2. Indicates the number of energy levels
  2. 3. The number of non metal elements on the periodic table of elements
  3. 4. Used in blimps, airships, and balloons
  4. 6. Group 7A on the periodic table
  5. 8. Can be found in quartz crystal, sand, and glass
  6. 9. Most abundant metal in earth’s crust
  7. 10. _______ number indicates the valance electrons
Down
  1. 1. The designer of the periodic table of elements
  2. 5. Found widely in nature- rocks, coral reefs
  3. 7. least reactive of all the alkali metals