Exploring Physical Science
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Multiple Choice Quiz 1
Multiple Choice Quiz 2
True or False
Physical Science, 5/e
Bill Tillery, Arizona State University
What reason did Dalton have for bringing back the ancient Greek idea of matter being composed of hard, indivisible atoms?
What was the experimental evidence that Thomson had discovered the existence of a subatomic particle when working with cathode rays?
Describe the experimental evidence that led Rutherford to the concept of a nucleus in an atom.
What is the main problem with a solar system model of the atom?
Compare the size of an atom to the size of its nucleus.
What does atomic number mean? How does the atomic number identify the atoms of a particular element? How is the atomic number related to the number of electrons in an atom?
An atom has 11 protons in the nucleus. What is the atomic number? What is the name of this element? What is the electron configuration of this atom?
Describe the three main points in the Bohr model of the atom.
Why do the energies of electrons in an atom have negative values? (Hint: It is not because of the charge of the electron.)
Which has the lowest energy, an electron in the first energy level (n = 1) or an electron in the third energy level (n = 3)? Explain.
What is similar about the Bohr model of the atom and the quantum mechanical model? What are the fundamental differences?
What is the difference between a hydrogen atom in the ground state and one in the excited state?
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