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Questions and Answers
Who proposed that atoms are solid indivisible spheres?
Who proposed that atoms are solid indivisible spheres?
The Plum Pudding model was proposed by Joseph John Thomson.
The Plum Pudding model was proposed by Joseph John Thomson.
True
What experiment did Robert Millikan conduct to determine the charge of electrons?
What experiment did Robert Millikan conduct to determine the charge of electrons?
Oil-drop Experiment
H.G.J. Moseley studied _____ given off by various elements to establish atomic numbers.
H.G.J. Moseley studied _____ given off by various elements to establish atomic numbers.
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Match the following scientists with their contributions to atomic theory:
Match the following scientists with their contributions to atomic theory:
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What does the atomic number of an element represent?
What does the atomic number of an element represent?
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Niels Bohr proposed that electrons can occupy an infinite number of energy levels.
Niels Bohr proposed that electrons can occupy an infinite number of energy levels.
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Who discovered neutrons?
Who discovered neutrons?
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The principle that states it is impossible to determine the exact momentum and position of an electron simultaneously is known as the ______.
The principle that states it is impossible to determine the exact momentum and position of an electron simultaneously is known as the ______.
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Match the following individuals to their contributions to atomic theory:
Match the following individuals to their contributions to atomic theory:
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