Chemistry Crossword

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Across
  1. 4. The phrase used to identify electrons on the outermost energy level
  2. 7. A table that organizes all the elements based on their properties
  3. 8. unreactive elements that make up group 18
Down
  1. 1. The vertical collums on the periodic table
  2. 2. The horizontal rows on the periodic table
  3. 3. Elements that are good conductors,shiny,malleable,and ductile
  4. 5. defines the identity of an atom
  5. 6. a pure substance made of only one atom