History of Atomic Models Worksheet
Explore the evolution of atomic theory from early philosophical ideas to modern quantum mechanical models with this comprehensive worksheet.
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History of Atomic Models
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Read each question carefully and provide your best answer based on your knowledge of the history of atomic models. Good luck!
1. Which scientist proposed the 'plum pudding' model of the atom?
John Dalton
Ernest Rutherford
J.J. Thomson
Niels Bohr
2. The Gold Foil Experiment led to the discovery of which part of the atom?
Electrons
Protons
Neutrons
Nucleus
3. Dalton's atomic theory stated that all atoms of an element are and cannot be created or destroyed.
4. In the Bohr model, electrons orbit the nucleus in specific energy .
5. Briefly explain why the Rutherford model was a significant improvement over the Thomson model.
6. The quantum mechanical model describes electron paths as definite orbits around the nucleus.
True
False
Match each scientist with their primary contribution to atomic theory.
7. Democritus
a. Discovered the electron
8. J.J. Thomson
b. Proposed the idea of indivisible particles (atomos)
9. Ernest Rutherford
c. Proposed the nuclear model of the atom
10. Observe the image below, which represents an early atomic model. Identify the scientist associated with this model and describe its key features.
