Across
- 3. the positively charged subatomic particle that resides inside the nucleus,
- 4. Model The oldest model of the atom, which looks specifically at the atom as a sphere which cannot be cut further,
- 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),
- 7. The entire atom and its electron cloud, EXCEPT the valence shell,
- 10. This model states that the electrons move in a predictable path that can be determined around the nucleus,
- 11. An electrically neutral indivisible piece of matter where the number of protons equals the number of electrons,
- 12. The region where an electron is said to have the highest probability to exist,
- 13. The electrically neutral subatomic particle that resides inside the nucleus,
Down
- 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. 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,
- 5. The electrically negative subatomic particle that resides outside the nucleus,
- 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",
- 9. Model The current model of the atom, states that there are regions of the highest probability where an electron may reside,