Periodic Table Crossword

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Across
  1. 3. a positively charged subatomic particle in the nucleus of an atom
  2. 5. ion with negetive charge
  3. 7. Left side of periodic table
  4. 8. symbol for atomic mass unit
  5. 10. group 1 or 1A
  6. 12. weight of the element
  7. 15. The amount of Protons and Electrons in an element
  8. 16. any atoms having the same number of protons but a different number of neutrons
Down
  1. 1. a vertical column of elements in the periodic table
  2. 2. Right Side of periodic table
  3. 4. an element that has properties of both a metal and nonmetal
  4. 6. a neutral subatomic particle in the nucleus of an atom
  5. 9. group 2 or 2A
  6. 11. a negatively charged subatomic particle found in the energy level of an atom
  7. 13. ion with positive charge
  8. 14. a horizontal row of elements in the periodic table