Periodic Table Crossword – Extended Challenge

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12345678910111213141516171819
Across
  1. 3. This gas makes up most of the air (symbol N)
  2. 6. Symbol Cl, found in bleach and combined with sodium in salt
  3. 7. Symbol Zn, used to coat metals and found in sunscreen
  4. 13. Symbol K, found in bananas and important for nerves
  5. 14. Lightest element, part of water (symbol H)
  6. 15. Symbol C, found in diamonds, coal, and all living things
  7. 16. Symbol Mg, important mineral for muscles and plants
  8. 18. Symbol Ag, precious metal used in coins and mirrors
  9. 19. Symbol Na, found in table salt with chlorine
Down
  1. 1. Symbol Cu, reddish-brown metal used in wires and pennies
  2. 2. Symbol Pb, heavy metal once used in pipes and paint
  3. 4. Symbol Fe, used in tools and bridges
  4. 5. Symbol Au’s cousin, platinum-like metal, symbol Pt
  5. 8. Symbol O, essential for breathing
  6. 9. Shiny yellow metal used in jewellery (symbol Au)
  7. 10. Symbol Ca, strengthens bones and teeth
  8. 11. Symbol Si, used in glass and computer chips
  9. 12. A gas lighter than air, used in balloons (symbol He)
  10. 17. Symbol S, yellow element with a strong smell, used in matches