Questions and Answers
What did Antoine Becquerel discover by accident?
The darkening of photographic plates by uranium compounds
What are subatomic particles that atoms are made up of?
Protons, neutrons, and electrons
Who determined the ratio of electric charge to the mass of an individual electron using a cathode ray tube?
J. J. Thomson
Who is credited with the discovery of X-rays?
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According to the Law of Conservation of Mass, what can matter not do?
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According to Dalton's Atomic Theory, which of the following statements is NOT true?
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Which law is supported by Dalton's Atomic Theory and states that different samples of the same compound always contain its constituent elements in the same proportion by mass?
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What does Dalton's Atomic Theory state about the size, mass, and chemical properties of atoms of a given element?
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In Dalton's Atomic Theory, what is the relationship between the atoms of one element and the atoms of all other elements?
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Which principle states that if two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element are in ratios of small whole numbers?
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