Atomic Models Crossword Puzzle

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Across
  1. 4. worked with atoms and elements; rearranged the periodic table by increasing atomic number
  2. 7. foil experiment used by Rutherford to discover nucleus of an atom and that much of an atom's volume is empty space
  3. 8. negative charged particle
  4. 10. ray tube used by Thompson to discover electrons
  5. 11. determines the quantity of charge and the mass of an electron
  6. 12. term coined by Democritus
  7. 14. a nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy
  8. 15. tried to turn metals into gold
  9. 16. discovered the nucleus
  10. 18. used ratios to rediscover atoms
  11. 19. made up of atoms of elements and always bond in whole number ratios
  12. 20. makes up protons and neutrons (10^-18 meters)
  13. 21. field given off by atom and seen first in 1983
  14. 22. a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy
Down
  1. 1. and the atomists said everything is made of indivisible particles (atomos)
  2. 2. discovered the electron in the late 1800's
  3. 3. Project produced the first nuclear weapons in World War II
  4. 5. rearranged the periodic to how it is today by creating the bottom two rows; won the Nobel Prize
  5. 6. pudding model created by Thompson in 1904
  6. 9. said everything is made of water
  7. 12. along with Plato, believed everything is made from 4 elements (air, water, earth, fire)
  8. 13. tunneling microscope traces electron
  9. 17. adaptation or change