Microscopic Physics

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Across
  1. 4. Elementary particle, the quantum of light
  2. 6. Very dense region consisting of protons and neutrons at the center of an atom
  3. 7. Electrically neutral group of two or more atoms held together
  4. 8. Subatomic particle with a positive electric charge
  5. 9. Subatomic particle with no net electric charge
  6. 10. Specific region around the atom's nucleus with the probability of finding any electron
  7. 13. Electrically neutral, weakly interacting elementary subatomic particle with half-integer spin
  8. 14. Elementary particle and a fundamental constituent of matter
  9. 15. Subatomic particle with a negative elementary electric charge
Down
  1. 1. Elementary particle that acts as the exchange particles for the strong force between quarks
  2. 2. Basic unit of matter consisting of a nucleus within a cloud of one or more electrons
  3. 3. Material composed of particles have opposite charge
  4. 5. Instrument used to see objects that are too small for the naked eye
  5. 11. Scientist, who discovered atomic nucleus
  6. 12. Basic property of electrons, protons and other subatomic particles, positive or negative