Questions and Answers
Who is credited with the discovery of the electron?
J.J. Thomson
Which theory is based on the law of conservation of mass and the law of definite proportions?
Dalton's atomic theory
What are the three subatomic particles discovered during the investigations of atomic structure?
Electrons, protons, and neutrons
Who conducted the famous gold foil experiment that led to the nuclear atom structure?
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Which scientist proposed the concept of quantized energy levels in the hydrogen atom?
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What are the three subatomic particles discovered during the investigations of atomic structure?
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Who proposed the concept of quantized energy levels in the hydrogen atom?
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What are the two laws on which Dalton's atomic theory (1808) is based?
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Who conducted the famous gold foil experiment that led to the nuclear atom structure?
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What is the name of the scientist who imagined an atom that was both extremely small and indivisible?
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Study Notes
Atomic Structure and Theories
- J.J. Thomson is credited with the discovery of the electron.
Atomic Theories
- Dalton's atomic theory (1808) is based on the law of conservation of mass and the law of definite proportions.
Subatomic Particles
- The three subatomic particles discovered during investigations of atomic structure are protons, neutrons, and electrons.
Experiments and Discoveries
- Ernest Rutherford conducted the famous gold foil experiment that led to the nuclear atom structure.
Energy Levels
- Niels Bohr proposed the concept of quantized energy levels in the hydrogen atom.
Ancient Concepts
- Democritus imagined an atom that was both extremely small and indivisible.
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