Periodic Table

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Across
  1. 5. the smallest particle of an element that still has the properties of that element
  2. 6. smallest known particles
  3. 8. where electrons are located
  4. 9. where protons and neutrons are located
  5. 11. commonly used model to show atoms
  6. 12. what are shown on the periodic table
  7. 15. neutral charge in atoms
  8. 16. can be told by the amount of protons AND neutrons
  9. 19. mass #, symbol (isotope notation)
  10. 20. letter that represents the element
Down
  1. 1. can be told by the group number
  2. 2. what all elements are shown on
  3. 3. atoms of the same element with different numbers of neutrons
  4. 4. tells you the amount of energy levels
  5. 7. used to identify an element
  6. 10. the number used to show the mass of the most common isotope of an atom
  7. 13. negative charge in atoms
  8. 14. name of element-mass number (isotope notation)
  9. 17. tells you the amount of valence electrons
  10. 18. positive charge in atoms