Physical science crossword

12345678
Across
  1. 1. positively charged particles found in the nucleus
  2. 4. a subdivision of electron shells separated by electron orbitals
  3. 6. an effect when 2 unlike particles are in contact with one another
  4. 7. Found on the shells of an atom
  5. 8. effect that reduces the nuclear pull on the valence electron
Down
  1. 2. a space where electrons can be found
  2. 3. electron on the furthest energy level
  3. 5. increases as you move from period to period