Periodic Table Crossword

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Across
  1. 4. Gas we breathe to live
  2. 6. Metal used to make steel
  3. 8. Gas used to fill balloons
Down
  1. 1. Element found in coal and diamonds
  2. 2. lightest element in the periodic table
  3. 3. Soft metal that reacts with water
  4. 5. Yellow metal used for jewelery
  5. 7. Shiny metal used for jewelery