Periodic Table

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Across
  1. 6. The element found in table salt
  2. 8. A metal often used to make cans
  3. 10. A negatively charged particle
  4. 11. The number of protons in an atom is called the atomic
  5. 13. The element with the symbol Cl, used in pools
  6. 14. A soft, gray metal with the symbol Pb
  7. 16. A metal that is liquid at room temperature; symbol Hg
  8. 17. The element with the symbol Fe
  9. 19. The element with the symbol Cu
Down
  1. 1. The number of electrons equals the number of
  2. 2. The element with the symbol Au
  3. 3. A fundamental nonmetal found in bananas; symbol K
  4. 4. The lightest element on the periodic table
  5. 5. The center of an atom
  6. 7. The element we breathe in to stay alive
  7. 9. The smallest unit of matter
  8. 11. The gas that makes up most of Earth’s atmosphere
  9. 12. The gas that makes balloons float
  10. 13. What humans are mostly made of
  11. 15. The element with the symbol Ag
  12. 18. A gas that protects us from the Sun’s UV rays