Atomic Models
Topic Page
Atomic Models
Questions
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Question #2b905
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Why is the atomic model useful?
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Why are atomic models necessary?
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How did Rutherford know that the nucleus was positively charged?
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What are cathode rays made of according to J. J. Thomson?
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Why is Rutherford’s experiment called the gold foil experiment?
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What are elements made of according to John Dalton?
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What are the conclusions of the Cathode ray experiment?
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How many electrons can the fourth energy level hold according to Niels Bohr?
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Would an electron have to absorb or release energy to jump from the second energy level to the third energy level according to Niels Bohr?
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Why could Bohr’s model be called a planetary model of the atom?
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How are atomic models used?
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What are some common mistakes students make with atomic models?
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Who came up with the plum pudding model of the atom?
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Question #b3781
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Question #13bf5
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Question #65395
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Might our current models of the atom change in the future?
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Question #a0dbd
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Question #b99b3
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What is an electron cloud?
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Are the electron shell and the electron cloud the same thing?
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In the modern atomic model, the electron cloud is denser in some locations than in others. What do the denser areas represent?
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What does the electron cloud model describe?
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Which has more mass - the nucleus or electron cloud?
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Where is the electron cloud located in the atom?
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Why do electron clouds repel?
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How do electrons move in the electron cloud?
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How can you determine electron cloud size?
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Question #ef968
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Why is a model made to be simpler than the thing that it represents?
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Why does the electron not crash into the nucleus of an atom?
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Is the nucleus of an atom neutral, positively or negatively charged?
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Question #ed86f
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Why did Rutherford draw the conclusions that he did from his famous gold-foil experiment?
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What are the assumptions in Dalton's atomic theory?
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Which statement is INCONSISTENT with Dalton's atomic theory?
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What is the Plum Pudding Model?
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Question #a117e
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Where are neutrons located?
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Question #38c37
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What was Democritus's atomic theory?
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Question #cd4b4
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What is the difference between an orbit in Bohr's model of the atom and an orbital in the quantum mechanical view of the atom?
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How is Thomson's model of an atom different from Dalton's model?
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How do you use electron-dot notation to illustrate the number of valence electrons present in one atom?
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Why are scientific models useful?
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What are scientific models?
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What was Niels Bohr's explanation for the observation of atomic spectra?
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What did Democritus do?
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In 1897, who described the atom using the "raisin bun model"?
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What did John Dalton's atomic theory state?
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Sally is making a model of a Mg atom with an atomic mass number of 24. She has balls for the protons, neutrons, and electrons. She has added 6 neutrons to her model. How many more neutrons does she need to add to complete her neutral atom of magnesium?
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What is the Bohr-Bury scheme of arrangement of electrons in an atom?
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Question #64e2e
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Why is a stairway a good model for the energy levels in an atom?
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How you would show J. J. Thomas's model of the atom using small beads and clay?
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Using this model of a helium atom, what is the atomic number and mass number?
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What were the contributions of de Broglie, Hund, and Pauli to our understanding of the atom?
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Question #27b1f
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Why did Thomson change Dalton's model of the atom? What did he propose as an alternative?
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Question #19b6e
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Who was #"John Dalton"#?
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Question #68eba
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Who originally described atoms as small, indivisible spheres?
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Who originally determined that electrons move around the nucleus of an atom?
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Did Ernest Rutherford's experiment lead to the nuclear model of the atom?
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Did Ernest Rutherford's experiment establish the plum budding model of the atom?
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Did Robert Millikan's postulates form the most accepted theory for atomic structure?
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Did Robert Millikan's results impact on determining the charge of an electron?
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Whose work directly resulted in the development of an atomic model that has negative electrons stuck within a sea of positive material?
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Question #a7007
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How would you construct a model to show the atomic structure for an oxygen atom?
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What is Thomson's atom?
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Question #b5319
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Who was the man who lived from 460 B.C. to 370 B.C. and was among the first to suggest the idea of atoms?
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How would Democritus describe the idea of an atom?
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Why was the #"plum pudding model"# of J. J. Thomson rejected?
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Question #d56d7
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Why is it so much easier to remove an electron from an atom of a large atomic mass than it is to remove a proton?
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Question #cfb9a
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How does mixing water and alcohol show that atoms have a lot of empty space?
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As a consequence of the discovery of the nucleus by Rutherford, which model of the atom is thought to be true?
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Question #95e91