Elements

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Across
  1. 3. This element glows in the dark and found in matches
  2. 8. Formula 1 banned this element is the engine construction due to the elements toxicity as well as it expensiveness
  3. 9. this is the universes fourth most abundant element by mass
  4. 10. This element has an atomic number of 15.994
  5. 11. this gas is used in light bulbs
  6. 15. taking this element before bed provides a better rest
  7. 17. green gas and is used to clean pools
  8. 18. this element is found in compounds such as borax and boric acid
  9. 19. this element is found in bones and teeth
Down
  1. 1. this element is also an essential nutrient
  2. 2. first element on the periodic table
  3. 4. people use this element to make their voice a higher pitch
  4. 5. This element is used in a lot of delicious cooked meals
  5. 6. has an average atomic mass of 6.941
  6. 7. this element is the most reactive throughout the entire periodic table
  7. 11. This element is used often as a kitchen appliance in form of a foil
  8. 12. This element emits a bright orange-red light when an electric current passes through it
  9. 13. This element is used commonly to make electronic chips
  10. 14. Yellow solid with rotten egg smell
  11. 16. This element makes up about 78% of earths atmosphere