Grey Roesti

1234567891011
Across
  1. 4. indicates number or energy levels
  2. 6. particle that isn't charged and keeps the protons together in the atom
  3. 7. found on the let side of the periodic table
  4. 9. found on the right side of the periodic table
  5. 10. came up with the idea for the model of the atom
  6. 11. mass divided by volume
Down
  1. 1. are used for things that are too small or large to be observed or that are too difficult to be understood easily
  2. 2. indicates number of valance electrons
  3. 3. positively charged particle in the nucleus
  4. 5. negatively charged particle 2000x smaller than the protons and neutrons
  5. 8. cannot be created or destroyed