Dewayne Zantow's Crossword

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Across
  1. 2. A vertical column of elements in the periodic table.
  2. 4. In chemistry, a horizontal row of elements in the periodic table.
  3. 7. An element that is shiny and that conducts heat and electricity well.
  4. 8. The weighted average of the masses of all naturally occurring isotopes of an element.
Down
  1. 1. An element that conducts heat and electricity poorly.
  2. 3. An arrangement of the elements in order of their atomic numbers such that elements with similar properties fall in the same column, or group.
  3. 5. A one-, two-, or three-letter abbreviation of the name of an element.
  4. 6. An element that has properties of both metals and nonmetals.