Thankful for Chemistry Puzzle

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Across
  1. 5. element that makes up diamonds
  2. 7. found in toothpaste and naturally in shark teeth
  3. 9. fills airbags
  4. 12. bean studied by Dr. Julian to find cures for diseases
  5. 13. First name of Dr. Julian
  6. 16. party balloons
  7. 17. Disease of the joints Dr. Julian found treatment for
  8. 18. low density but strong metal used in airplanes
  9. 20. bones, teeth, and seashells
  10. 21. acronym for chemical used in bug repellant
Down
  1. 1. plenty of it in the atmosphere to run our cars and stay alive
  2. 2. found in stars and used as energy to warm our world. Most abundant element in universe
  3. 3. low density but strong metal used in ladders and cans
  4. 4. best conductor but pricey, sprayed as paint in your phones to conduct electricity
  5. 6. our current age, abundant and strong, superhero
  6. 8. Disease of the eye Dr. Julian found treatment for
  7. 10. helps prevent counterfeit money
  8. 11. coffee, chocolate, stimulant
  9. 14. critical metal for the batteries of your phones
  10. 15. shiny metal
  11. 19. has density of 19.3 g/mL, holds value for thousands of years
  12. 20. electric wiring, good conductor