Atomic Theory Crossword

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Across
  1. 1. Made of only one type of atom
  2. 4. Thought about Atomic theory
  3. 7. Made the first model of the atom
  4. 9. Positively charged particle in an atom
  5. 10. Made of two or more atoms bonded together
  6. 11. Dense middle portion of an atom that is positively charged
Down
  1. 1. Negatively charged particle in an atom
  2. 2. Discovered the electron
  3. 3. Discovered the nucleus
  4. 5. Made the current atomic model
  5. 6. Came up with the planetary model of the atom
  6. 8. Building block of matter
  7. 9. pudding Model that Thomson made