Chemistry Crossword Puzzle

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Across
  1. 3. the positively charged subatomic particle that resides inside the nucleus,
  2. 4. Model The oldest model of the atom, which looks specifically at the atom as a sphere which cannot be cut further,
  3. 6. In science, this term means a concept that is proven beyond nearly all measure, but must pass one final step in scrutiny (the level beneath a scientific law),
  4. 7. The entire atom and its electron cloud, EXCEPT the valence shell,
  5. 10. This model states that the electrons move in a predictable path that can be determined around the nucleus,
  6. 11. An electrically neutral indivisible piece of matter where the number of protons equals the number of electrons,
  7. 12. The region where an electron is said to have the highest probability to exist,
  8. 13. The electrically neutral subatomic particle that resides inside the nucleus,
Down
  1. 1. Experiment This experiment by Ernest Rutherford gave the TWO fundamental conclusions that an atom is mostly empty space and that the nucleus is an extremely dense region of positive charge,
  2. 2. An electrically charged indivisible piece of matter where an electron has either been added or removed, and therefore there is a positive or negative charge,
  3. 5. The electrically negative subatomic particle that resides outside the nucleus,
  4. 8. Model Devised by J.J. Thompson, this model believed that the atom was a matrix or "pudding" of positive charge and that the electrons were stuck in like "raisins",
  5. 9. Model The current model of the atom, states that there are regions of the highest probability where an electron may reside,