Atomic Models Worksheet
Explore the historical development and key features of different atomic models, from Dalton to the Quantum Mechanical Model.
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Atomic Models Worksheet
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Date:
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Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. Which atomic model proposed that atoms are indivisible, solid spheres?
Rutherford's Model
Dalton's Model
Bohr's Model
Thomson's Model
2. The 'plum pudding' model of the atom was proposed by:
John Dalton
Ernest Rutherford
J.J. Thomson
Niels Bohr
3. In Rutherford's gold foil experiment, most alpha particles passed straight through, suggesting that the atom is mostly .
4. Bohr's model proposed that electrons orbit the nucleus in specific energy levels or .
5. The Quantum Mechanical Model describes electron paths as fixed orbits around the nucleus.
True
False
6. Neutrons were discovered after protons and electrons.
True
False
7. Briefly describe the main difference between Thomson's 'plum pudding' model and Rutherford's nuclear model of the atom.
8. Explain why the Quantum Mechanical Model is considered a more accurate representation of the atom than Bohr's model.
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