Atom Theory

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Across
  1. 2. negative charge
  2. 4. what is the atomic number of helium
  3. 7. J.JThomsom Atom model
  4. 9. what are neutrons made from
  5. 10. center of atom
Down
  1. 1. positive charge
  2. 3. neutral charge
  3. 5. what are protons made from
  4. 6. really tiny particle
  5. 8. solid energy level