Questions and Answers
Who is credited with the development of the Solid Sphere Model?
John Dalton
What observation led John Dalton to propose the Solid Sphere Model?
Matter is always combined in fixed ratios based on weight or volume.
Which scientist developed the Plum Pudding Model of the atom?
J.J. Thomson
What did J.J. Thomson's Plum Pudding Model propose about the atom?
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What observation by John Dalton forms a key principle of the Solid Sphere Model?
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For what achievement was J.J. Thomson awarded a Nobel Prize in Physics?
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Who experimented on cathode ray tubes and concluded that the cathode ray is made up of electrons?
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Which model proposed a spherical atomic structure with a nucleus at the center and electrons revolving around the nucleus in circular orbits?
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Who noticed the electrons’ position in Rutherford’s model and modified it to create a model with fixed electron orbits based on defined energy levels?
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In which experiment were alpha particles beamed through a gold foil, leading to the conclusion that an atom is mostly empty with a tiny, dense, positively-charged nucleus?
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Who hypothesized that the wave behavior of the electron is thought of as undulations of matter and proposed the Planetary Model of the atom?
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Which model was rejected due to the inability to explain the stability of the atom and the loss of energy by electrons falling into the nucleus?
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Who won the Nobel Prize in Chemistry in 1908 for pioneering studies in radioactivity and the atom?
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Which scientist began to think about explaining movement of an electron as a wave, leading to what is referred to as energy levels or electron shells?
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Why was the Plum Pudding Model rejected?
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What was concluded from the Gold Foil Experiment?
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John Dalton's Solid Sphere Model proposed that atoms of different elements contain different types of atom.
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J.J. Thomson was awarded a Nobel Prize in Chemistry in 1908 for pioneering studies in radioactivity and the atom.
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J.J. Thomson's Plum Pudding Model suggested that atoms can neither be created nor destroyed.
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John Dalton's observation that matter is always combined in fixed ratios based on weight or volume led to the development of the Plum Pudding Model.
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J.J. Thomson's Plum Pudding Model builds strongly upon the work of other scientists.
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The Plum Pudding Model proposed that atoms of different elements combine in fixed, whole-number ratios when forming compounds.
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Niels Bohr was awarded the Nobel Prize in Physics in 1922.
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The Gold Foil Experiment concluded that an atom is mostly empty with a tiny, dense, negatively-charged nucleus.
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J.J. Thomson won the Nobel Prize in Chemistry in 1908.
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Ernest Rutherford's nuclear model proposed that electrons revolve around the nucleus in circular orbits.
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The Planetary Model proposed by Niels Bohr hypothesized that electrons move around the nucleus at any distance based on the defined amount of energy they have.
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The Plum Pudding Model was rejected due to its inability to explain the stability of the atom and the loss of energy by electrons falling into the nucleus.
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The cathode ray is composed of protons according to J.J. Thomson's conclusion.
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The Quantum Mechanical Model explained the weak position of the electrons and only showed the nucleus’ position.
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In the Gold Foil Experiment, most of the alpha particles were deflected by the foil and hit a spot on a screen placed off to one side.
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The Schrodinger equation provides a way to calculate the wave function of a system according to Niels Bohr.
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