mia

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Across
  1. 2. on the right side of the periodic table
  2. 3. the atomic weight is 56
  3. 6. a symbol which determines the chemical
  4. 13. vertical columns on a periodic table
  5. 14. atomic weight of 7
  6. 15. any group of rare gases
  7. 18. gas in the periodic table
  8. 21. average mass of an atom of an element
  9. 23. a family that has 5 electrons
  10. 25. something that can be found in milk
  11. 27. the atomic weight is 4
Down
  1. 1. something that has groups and periods
  2. 4. subatomic particle
  3. 5. inert gas
  4. 7. metals that make up the first column (group) of the periodic table
  5. 8. horizontal rows on a periodic table
  6. 9. The number of protons in a nucleus
  7. 10. Number of protons and neutrons in a nucleus
  8. 11. atomic weight is 1
  9. 12. chemical symbol is mg
  10. 14. inert gas
  11. 16. chemical symbol is TI
  12. 17. A complex consisting of two atoms.
  13. 19. substance composed of atoms with identical atomic number.
  14. 20. atomic weight is 11
  15. 22. has the atomic number of 5
  16. 24. A taxon (group of organisms) made up of related genera.
  17. 26. on the left side of the periodic table