Atomic Structure and Periodic Table

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Across
  1. 4. the center of an atom
  2. 7. negatively charged particle that is outside the center of an atom
  3. 9. atoms of the same element that have different amounts of neutrons
  4. 11. positively charged particle that is in the center of an atom
  5. 13. bond that shares electrons between atoms
  6. 14. positively charged ion
Down
  1. 1. neutrally charged particle that is in the center of an atom
  2. 2. a drawing structure of an atom that shows all the electron shells
  3. 3. electrons in the outermost shell that participate in reactions
  4. 5. negatively charged ion
  5. 6. a single particle of an element
  6. 8. a drawing structure of an atom that only shows the outer electrons
  7. 10. bonds formed from oppositely charged ions
  8. 11. another name for the rows of the periodic table
  9. 12. groups on the periodic table that have similar chemical properties