Periodic Tabel Vocab

12345678910111213141516171819
Across
  1. 2. elements that arent known
  2. 4. to the far right
  3. 5. atoms are packed tightly
  4. 7. its symbol is an HE
  5. 9. chemical element that forms a simple substance
  6. 12. number of protons and electrons
  7. 13. is needed to breathe
  8. 15. ments
  9. 17. the brain of a cell
  10. 18. its symbol is C
  11. 19. can be determined using atomic number
Down
  1. 1. same number as the atomic number
  2. 3. atoms move around alot
  3. 6. atoms move around smoothly
  4. 8. makes up anything with mass
  5. 9. to the left
  6. 10. Its symbol is B
  7. 11. universal colvent
  8. 14. its symbol is an H
  9. 16. neutral