periodic table

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Across
  1. 4. a material that prevents heat
  2. 7. the chart of the elements showing the repeating pattern of their properties
Down
  1. 1. a property used to describe a material that can be pounded into shapes
  2. 2. the average mass of all the atoms of an element
  3. 3. column of elements with similar properties on the periodic table(there are 18)
  4. 5. a property used to describe a material that can be drawn into a long wire
  5. 6. a row of the periodic table(there are 7)