History of the Atom

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Across
  1. 1. the name of the model that shows an atom with mostly empty space where the positive and negative are scattered?
  2. 4. the number of Postulates that Dalton had
  3. 7. neutral part of the atom
  4. 10. who was the first person to say the "two elements cannot be destroyed"
  5. 12. a type of radiation that comes from a radiation source
  6. 13. used in experiments by JJ Thomson
  7. 14. Democritus theory said that this is made of small pointy atoms
  8. 16. the positive center of Rutherford atom
  9. 17. the charge of beta rays
  10. 18. negative particle that is part of the atom
  11. 19. One of Demcritus theories on the atom (starts with ind....)
Down
  1. 2. Democritus theory said that this is made of large round atoms
  2. 3. who proposed that atoms are the basic building blocks of matter
  3. 5. a scientist from New Zealand who helped to disprove the plum pudding of the atom
  4. 6. propose that electrons ae found orbits or energy levels
  5. 8. the Greek word that means indivisible
  6. 9. who said that the atom is composed of two elements
  7. 11. a French physicist who is credited with discovering radiation with Marie and Pierre Curie
  8. 12. Rutherford's experiment if called
  9. 14. what is the Shape of Democitus model of the atom
  10. 15. positive particle that is part of the atom