Nathan's Science crossword

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Across
  1. 2. A vertical column of elements in the periodic table; elements in a group share chemical properties
  2. 5. An element that is shiny and that conducts heat
  3. 8. The weighted average of isotopes
Down
  1. 1. A abbreviation of an element
  2. 3. An arrangement of the elements on a table
  3. 4. An element that has properties of both metals and nonmentals.
  4. 6. A horizontal row of elements in the periodic table.
  5. 7. An element that conducts heat and electricity poorly.