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History of the Atom Quiz - Answers |
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1. Who discovered the law of conservation of
mass? |
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a. Proust |
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b. Dalton |
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c. Democritus |
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d. Lavoisier |
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2. What discovery led to the plum pudding
model? |
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a. discovery of electrons |
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b. discovery of the nucleus |
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c. discovery of protons |
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d. discovery of alpha particles |
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3. What experiment proved the existence of an atomic
nucleus? |
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a. CRT |
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b. oil drop |
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c. gold foil |
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d. uncertainty principle |
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4. What was Dalton’s model of the atom called? |
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a. planetary model |
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b. plum pudding model |
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c. billiard ball model |
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d. nuclear model |
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5. The law that states that ”a chemical
compound contains the same elements in exactly the same proportions by mass
regardless of the size of the sample or source of the compound” was
discovered by: |
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a. Aritstotle |
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b. Proust |
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c. Lavoisier |
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d. Dalton |
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6. Which part of Dalton’s theory was found to
be incorrect? |
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a. All matter is composed of atoms. |
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b. Atoms cannot be subdivided, created, or
destroyed. |
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c. Atoms of different elements combine in
simple whole-number ratios to form chemical compounds. |
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d. In chemical reactions, atoms are combined,
separated, or rearranged. |
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7. The nucleus of the atom was discovered by: |
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a. JJ Thomson |
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b. Robert Millikan |
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c. Ernest Rutherford |
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d. Niels Bohr |
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8. Who developed the planetary model? |
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a. JJ Thomson |
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b. Robert Millikan |
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c. Ernest Rutherford |
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d. Niels Bohr |
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9. The exact charge and mass of an electron was
determined by: |
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a. JJ Thomson |
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b. Robert Millikan |
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c. Ernest Rutherford |
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d. Niels Bohr |
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10. The velocity and position of an electron cannot
be determined at the same time. Who’s
uncertainty principle is this? |
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a. Chadwick |
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b. Dalton |
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c. Heisenberg |
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d. Rutherford |
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