Atomic theory

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Across
  1. 3. came to the conclusion that atoms cannot be broken down
  2. 4. electron location is limited to energy levels
  3. 7. basic unit of a chemical element
  4. 8. OG atomic theory guy
  5. 9. atom with the same number of protons,different number of neutrons
  6. 10. electrons are spread throughout the atom
  7. 12. shows that matter is composed of particles called atoms
Down
  1. 1. tubes used to see electrons
  2. 2. Cathode - Ray
  3. 5. found the nucleus of the atom
  4. 6. consists of neutrons and protons (at center of atom)
  5. 11. a way to count small particles