Elements on the Periodic Table

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Across
  1. 2. Found in all living things.
  2. 3. Important for bones and teeth.
  3. 6. A gas essential for breathing.
  4. 7. Gas used in bright signs.
  5. 8. Makes up most of the air.
  6. 10. A shiny, valuable metal.
Down
  1. 1. The lightest element.
  2. 2. Used in wires and coins.
  3. 4. A metal used to make steel.
  4. 5. Used in balloons to make them float.
  5. 9. A precious metal.