table periodic

12345678910111213141516171819
Across
  1. 3. Is used to keep pools clean, it has the chemical symbol Cl
  2. 5. Mirror one of the most toxic elements on the periodic table
  3. 8. Something that is inhaled every day. It is number 8
  4. 10. Number 14, can be used to seal holes
  5. 14. makes up about 40% of salt, it’s a metal
  6. 15. Naturally present in many foods, its shells have 2, 8, 5
  7. 16. Most commonly obtained from coal deposits, it is used in metal smelting
  8. 17. Lighter than air, makes your voice sound weird.
  9. 18. A metal, foil is made from it
  10. 19. Pale yellow in colour, used in fireworks
Down
  1. 1. Has the symbol N, used to make fertilisers
  2. 2. Found in milk, make bone strong
  3. 4. Nutrient needed for healthy muscles and bones, has the symbol Mg
  4. 6. Has the atomic number 1, used in fuel cells to create power and heat
  5. 7. Atomic number of 18, used by welder to protect the welding area
  6. 9. The gas is used in advertising signs, its shells have 2, 8
  7. 11. Used in flat-panel display production, has the symbol F
  8. 12. Found in weed killers, Symbol is B
  9. 13. Rechargeable batteries in phones, it is the least dense metal.
  10. 15. Number 19, found in banana