Olivia Bonaminio

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Across
  1. 2. how much the usual atom of an element weighs
  2. 4. particle with positive charge located in an atoms nucleus
  3. 7. particle with a neutral charge located in the nucleus
  4. 8. what the rings around an atom are called
  5. 9. an elements number of protons and where it is located on the periodic table
  6. 10. particle with a negative charge located outside the nucleus
Down
  1. 1. the electrons on the outer shell of an atom
  2. 3. forms of the same element with different numbers of protons or electrons
  3. 5. periods in the periodic table going horizontally
  4. 6. groups in the periodic table going vertically