Atomic Models Worksheet
Explore the evolution and characteristics of atomic models from Dalton to the Quantum Mechanical Model.
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Atomic Models Worksheet
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Read each question carefully and provide your best answer based on your knowledge of atomic models. Show all work where applicable.
1. Which atomic model first proposed that electrons orbit the nucleus in specific energy levels?
Dalton's Model
Thomson's Plum Pudding Model
Bohr's Model
Rutherford's Nuclear Model
2. The discovery of the electron led to the proposal of which atomic model?
Dalton's Model
Thomson's Plum Pudding Model
Rutherford's Nuclear Model
Quantum Mechanical Model
3. In the Rutherford model, the atom's positive charge and most of its mass are concentrated in a small region called the .
4. The model describes electrons in terms of probabilities of finding them in certain regions around the nucleus, known as orbitals.
5. Dalton's atomic theory stated that atoms of the same element are identical in all respects.
True
False
6. The Bohr model successfully explained the spectra of multi-electron atoms.
True
False
7. Briefly describe the main contribution of J.J. Thomson to the understanding of atomic structure.
8. Explain why the Rutherford model is also known as the 'nuclear model' of the atom.
Match each scientist with their primary associated atomic model or discovery.
9. John Dalton
a. Plum Pudding Model
10. Ernest Rutherford
b. Billiard Ball Model
11. Niels Bohr
c. Electron energy levels
12. J.J. Thomson
d. Discovery of the nucleus
13. Observe the atomic model below and answer the following questions:
a) Which historical atomic model does this diagram most closely represent?
b) What are the main limitations of this particular model?