Periodic Table

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Across
  1. 1. It is a transparent and tasteless liquid we drink.
  2. 4. They are used to treat bipolar disorder and treat major depressive disorder.
  3. 7. It is a minerl that is found in nuts and the environment.
  4. 10. It is the chemical element with the symbol Be
  5. 11. It is put into swimming pools to clean them.
  6. 12. Sand has a high of this element.
  7. 14. It is element 6 of the periodic table.
  8. 16. It is a bright yellow element.
  9. 18. In its solid state, it is called dry ice.
  10. 19. The first element of the periodic table
  11. 21. It is a mineral found in the foods we eat.
Down
  1. 2. It is used for power lines, window frames, trains, ships.
  2. 3. It is 78% of the air we breathe.
  3. 5. It is used in flares and fireworks because of its bright white light when it burns.
  4. 6. Sir Humphry Davy discovered the element.
  5. 8. It makes up around 21% of earths atmosphere.
  6. 9. It is the third-most abundant gas in the Earth's atmosphere.
  7. 13. It is milk.
  8. 15. It is the most reactive and most electronegative of all the elements.
  9. 17. It can be white, yellow, red, violet, or black and is a solid at room tempurature.
  10. 19. Used to make balloons float.
  11. 20. It glows red