Elements & Periodic Table

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Across
  1. 4. – Powers nuclear reactors
  2. 6. – Combines with chlorine in salt
  3. 7. – Used in pennies
  4. 9. – Lights up signs
  5. 11. – Essential for breathing
  6. 12. – Precious and conductive
  7. 13. – Makes up most of the air
  8. 15. – Fills balloons
Down
  1. 1. – Liquid metal
  2. 2. – Basis of life
  3. 3. – Lightest element
  4. 5. – Excellent conductor
  5. 8. – Builds strong bones
  6. 10. – Found in blood and steel
  7. 14. – Shiny and valuable