Periodic family

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Across
  1. 2. 7
  2. 4. of bottom two rows taken out of Periodic Table
  3. 5. conductors of electricity
  4. 6. to combine most often with Group 7
  5. 7. columns on the Periodic Table
  6. 8. up of elements that have similar chemical and physical properties.
Down
  1. 1. of bottom two rows taken out of Periodic Table
  2. 2. conductors of electricity
  3. 3. of both metals and non-metals
  4. 9. substance made up of only 1 type of atom