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Chapter 9 Quiz

38 Questions  I  By Jlsanko
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1.  The rate at which an object emits electromagnetic energy does not depend on its
A.
B.
C.
D.
2.  An s orbital
A.
B.
C.
D.
3.  The orbital of an atomic electron is 
A.
B.
C.
D.
4.  According to the exclusion principle, no two electrons in an atom can have the same
A.
B.
C.
D.
5.  A neon sign does not produce
A.
B.
C.
D.
6.  According to the Bohr model of the atom, an electron in the ground state
A.
B.
C.
D.
7.  An electron in a p state of an atom has an angular momentum quantum number l of 
A.
B.
C.
D.
8.  The mass of a photon
A.
B.
C.
D.
9.  Which of the following properties is not characteristic of the light waves from a laser? 
A.
B.
C.
D.
10.  The electrons in an atom all have the same 
A.
B.
C.
D.
11.  According to the uncertainity principle, it is impossible to precisely determine at the same time a particle's 
A.
B.
C.
D.
12.  How many quantum numbers are needed to determine the size and shape of an atomic orbital?
A.
B.
C.
D.
13.  According to the theories of modern physics, light
A.
B.
C.
D.
14.  The quantum-mechanical theory of the atom is 
A.
B.
C.
D.
15.  The description of a moving body in terms of matter waves is legitimate because
A.
B.
C.
D.
16.  Which of teh following types of radiation is not emitted by the electronic structures of atoms? 
A.
B.
C.
D.
17.  A hydrogen atom is said to be in its ground state when its electron 
A.
B.
C.
D.
18.  The speed of the wave packet that corresponds to a moving particle is 
A.
B.
C.
D.
19.  The energy difference between adjacent energy levels in the hydrogen atom
A.
B.
C.
D.
20.  When the speed of the electrons that strike a metal surface is increased, the result is an increase in
A.
B.
C.
D.
21.  If Planck's constant were larger than it is, 
A.
B.
C.
D.
22.  A phenomenon that cannot be understood with the help of the quantum theory of light is 
A.
B.
C.
D.
23.  An atom emits a phtoon when one of its orbital electrons
A.
B.
C.
D.
24.  The photoelectric effect can be understood on the basis of 
A.
B.
C.
D.
25.  In the Bohr model of the atom, the electrons revolve around the nucleus of an atom so as to 
A.
B.
C.
D.
26.  Electrons behave like
A.
B.
C.
D.
27.  An electron can revolve in an orbit around an atomic nucleus without radiating energy provided that the orbit
A.
B.
C.
D.
28.  A quantum number is not associated with an atomic electron's 
A.
B.
C.
D.
29.  De Broglie waves can be regarded as waves of 
A.
B.
C.
D.
30.  When an atom absorbs a photon of light, which one or more of the following can happen? 
A.
B.
C.
D.
E.
31.  Most stars are hot objects surrounded by cooler atmosphere. The spectrum of such a star is a
A.
B.
C.
D.
32.  The classical model of the hydrogen atom falls because
A.
B.
C.
D.
33.  According to the theories of modern physics, 
A.
B.
C.
D.
34.  The operation of the laser is based upon 
A.
B.
C.
D.
35.  The narrower the wave packet of a particle is
A.
B.
C.
D.
36.  THe emission spectrum produced by the excited atoms of an element contains frequencies that are 
A.
B.
C.
D.
37.  WHen light is directed at a metal surface, the energies of the emitted electrons
A.
B.
C.
D.
38.  In a vaccum, all photons have the same
A.
B.
C.
D.
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