Mid Term Crossword Puzzle

1234567891011121314151617181920
Across
  1. 2. an element used in pools
  2. 5. have the same number of valence electrons on the periodic table
  3. 6. the side of the periodic table where the elements are more stable
  4. 9. where the electrons are located
  5. 11. the center of an atom
  6. 12. the energy level that only holds two electrons
  7. 13. an element found in bananas
  8. 16. a subatomic particle that has a nuetral charge
  9. 17. tells you how many energy levels a atom has
  10. 18. the smallest part of an element
  11. 19. subatomic particles with a positive charge
  12. 20. the number of protons
Down
  1. 1. determines the properties of an element
  2. 3. an element that used to be found in pencils and is poisonous
  3. 4. electons arrange into these
  4. 7. an expensive metal commonly used in jewelery
  5. 8. something made up of only one type of atom
  6. 10. a element found in wires and in pennies
  7. 14. the measurement used to measure atoms
  8. 15. an element that can be found inside of a ballon