periodic table

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Across
  1. 3. Soft metal used in batteries
  2. 6. Element that forms the basis of life
  3. 9. Makes up most of Earth’s atmosphere
  4. 10. Lightweight metal used in foil
  5. 11. Yellow element known for its smell
  6. 14. Found in DNA and fertilizers
  7. 16. Reddish metal used in wiring
  8. 18. Valuable yellow metal, symbol Au
  9. 19. Metal important for bones and health
Down
  1. 1. Essential for bones and teeth
  2. 2. Precious metal, symbol Ag
  3. 4. Lightest element, atomic number 1
  4. 5. Essential gas for breathing
  5. 7. Reactive metal found in table salt
  6. 8. Noble gas used in balloons
  7. 10. Inert noble gas, often in light bulbs
  8. 12. Greenish gas used as disinfectant
  9. 13. Strong metal used in construction
  10. 15. Key element in computer chips
  11. 17. Reactive metal, symbol K