Question 1

According to the correspondence principle, a new theory must

Accepted Answer

A) overlap and agrees where the old theory works. 
B) account for confirmed results from the old theory. 
C) predict the same correct results as the old theory. 
D) all of the above 
E) none of the above 
A) overlap and agrees where the old theory works. 
B) account for confirmed results from the old theory. 
C) predict the same correct results as the old theory. 
D) all of the above 
E) none of the above D

Question 2

The rule stating that the sum of two emitted frequencies in an atomic spectrum equals a third frequency is attributed to the physicist

Accepted Answer

A) Niels Bohr. 
B) Max Planck. 
C) W. Ritz. 
D) Einstein 
A) Niels Bohr. 
B) Max Planck. 
C) W. Ritz. 
D) Einstein C

Question 3

The correspondence principle applies to

Accepted Answer

A) theories of submicroscopic phenomena. 
B) theories of macroscopic phenomena. 
C) all good theories. 
A) theories of submicroscopic phenomena. 
B) theories of macroscopic phenomena. 
C) all good theories. C

Question 4

The rule stating that the sum of two emitted frequencies in an atomic spectrum equals a third frequency is consistent with

Accepted Answer

A) momentum conservation. 
B) energy conservation. 
C) Planck's constant. 
D) none of the above 
A) momentum conservation. 
B) energy conservation. 
C) Planck's constant. 
D) none of the above

Question 5

Credit for research in our knowledge of the electron includes

Accepted Answer

A) William Crookes. 
B) J.J. Thomson. 
C) Robert Millikan. 
D) all of the above 
E) none of the above 
A) William Crookes. 
B) J.J. Thomson. 
C) Robert Millikan. 
D) all of the above 
E) none of the above

Question 6

The finding that electrons occupy discrete orbits in an atom was first explained by the

Accepted Answer

A) quantization of electric charge. 
B) small mass of the electron. 
C) circumference of each orbit being an integral multiple of an electron wavelength. 
D) none of the above 
A) quantization of electric charge. 
B) small mass of the electron. 
C) circumference of each orbit being an integral multiple of an electron wavelength. 
D) none of the above

Question 7

The discreteness of energy levels is best understood by considering the electrons to be

Accepted Answer

A) like tiny planets orbiting a sun. 
B) attached to the nucleus by massless springs. 
C) much less massive than the nucleus. 
D) all of the above 
E) none of the above 
A) like tiny planets orbiting a sun. 
B) attached to the nucleus by massless springs. 
C) much less massive than the nucleus. 
D) all of the above 
E) none of the above

Question 8

Unlike Bohr, Schrödinger viewed electrons as

Accepted Answer

A) fixed in position. 
B) traveling in circles. 
C) tiny bullets. 
D) waves. 
A) fixed in position. 
B) traveling in circles. 
C) tiny bullets. 
D) waves.

Question 9

When Rutherford directed a stream of alpha particles at a gold foil, most particles

Accepted Answer

A) bounced back. 
B) continued through. 
C) stopped. 
D) spiraled. 
A) bounced back. 
B) continued through. 
C) stopped. 
D) spiraled.

Question 10

A problem with the Bohr model of the atom is that electrons circling the nucleus

Accepted Answer

A) accelerate and should continuously emit radiation. 
B) lose energy and should spiral into the nucleus. 
C) both of these 
D) neither of these 
A) accelerate and should continuously emit radiation. 
B) lose energy and should spiral into the nucleus. 
C) both of these 
D) neither of these

Question 11

When an electron drops from a higher energy level to a lower one, energy is emitted. In comparison, how much energy is required to reverse the process, going from the lower level to the higher level?

Accepted Answer

A) less energy 
B) the same energy 
C) more energy 
A) less energy 
B) the same energy 
C) more energy

Question 12

The Schrödinger equation is most useful for describing

Accepted Answer

A) submicroscopic particles. 
B) microscopic particles. 
C) macroscopic particles. 
D) none of the above 
A) submicroscopic particles. 
B) microscopic particles. 
C) macroscopic particles. 
D) none of the above

Question 13

Why electrons don't spiral into atomic nuclei is best explained by their

Accepted Answer

A) particle nature. 
B) wave nature. 
C) both of these 
D) neither of these 
A) particle nature. 
B) wave nature. 
C) both of these 
D) neither of these

Question 14

The probability cloud for the electron in the hydrogen atom has an average radius

Accepted Answer

A) quite different from the radius predicted by Bohr. 
B) in agreement with the orbital radius of Bohr. 
C) as yet not accurately measured. 
A) quite different from the radius predicted by Bohr. 
B) in agreement with the orbital radius of Bohr. 
C) as yet not accurately measured.

Question 15

According to the Bohr model, an electron in an excited state of hydrogen can emit

Accepted Answer

A) at most a single photon until the atom re-excites. 
B) several photons in a series of transitions to a lower state. 
C) a continuous stream of light. 
D) none of the above 
A) at most a single photon until the atom re-excites. 
B) several photons in a series of transitions to a lower state. 
C) a continuous stream of light. 
D) none of the above

Question 16

Physicists today consider the Bohr model of the atom to be

Accepted Answer

A) an accurate picture of a hydrogen atom. 
B) totally useless - of historical interest only. 
C) oversimplified, but nevertheless useful. 
A) an accurate picture of a hydrogen atom. 
B) totally useless - of historical interest only. 
C) oversimplified, but nevertheless useful.

Question 17

Spectral lines for an element are often in the

Accepted Answer

A) infrared region. 
B) ultraviolet region. 
C) both of these 
D) neither of these 
A) infrared region. 
B) ultraviolet region. 
C) both of these 
D) neither of these

Question 18

Discrete radii and energy states of atoms were first explained by electrons circling the atom in an integral number of

Accepted Answer

A) wave frequencies. 
B) de Broglie wavelengths. 
C) diffraction patterns. 
D) high-speed particles. 
E) none of the above 
A) wave frequencies. 
B) de Broglie wavelengths. 
C) diffraction patterns. 
D) high-speed particles. 
E) none of the above

Question 19

The discreteness of orbits of electrons in an atom are due to

Accepted Answer

A) wave interference. 
B) momentum conservation. 
C) electric charge quanta 
D) all the above 
E) none of the above 
A) wave interference. 
B) momentum conservation. 
C) electric charge quanta 
D) all the above 
E) none of the above

Question 20

According to de Broglie, destructive interference occurs when an orbiting wave

Accepted Answer

A) reinforces itself 
B) doesn't reinforce itself. 
C) neither of these 
A) reinforces itself 
B) doesn't reinforce itself. 
C) neither of these

Exam 32: The Atom and the Quantum

According to the correspondence principle, a new theory must

The rule stating that the sum of two emitted frequencies in an atomic spectrum equals a third frequency is attributed to the physicist

The correspondence principle applies to

The rule stating that the sum of two emitted frequencies in an atomic spectrum equals a third frequency is consistent with

Credit for research in our knowledge of the electron includes

The finding that electrons occupy discrete orbits in an atom was first explained by the

The discreteness of energy levels is best understood by considering the electrons to be

Unlike Bohr, Schrödinger viewed electrons as

When Rutherford directed a stream of alpha particles at a gold foil, most particles

A problem with the Bohr model of the atom is that electrons circling the nucleus

When an electron drops from a higher energy level to a lower one, energy is emitted. In comparison, how much energy is required to reverse the process, going from the lower level to the higher level?

The Schrödinger equation is most useful for describing

Why electrons don't spiral into atomic nuclei is best explained by their

The probability cloud for the electron in the hydrogen atom has an average radius

According to the Bohr model, an electron in an excited state of hydrogen can emit

Physicists today consider the Bohr model of the atom to be

Spectral lines for an element are often in the

Discrete radii and energy states of atoms were first explained by electrons circling the atom in an integral number of

The discreteness of orbits of electrons in an atom are due to

According to de Broglie, destructive interference occurs when an orbiting wave

About Science

Newtons First Law of Motion: Inertia

Linear Motion

Newtons Second Law of Motion

Newtons Third Law of Motion: Action and Reaction

Momentum

Energy

Rotational Motion

Gravity

Projectile and Satellite Motion

Atomic Nature of Matter

Solids

Liquids

Gases and Plasmas

Temperature, Heat, and Expansion

Heat Transfer

Change of Phase

Thermodynamics

Vibrations and Waves

Sound

Musical Sounds

Electrostatics

Electric Current

Magnetism

Electromagnetic Induction

Properties of Light

Color

Reflection and Refraction

Light Waves

Light Emission

Light Quanta

Atomic Nucleus and Radioactivity

Nuclear Fission and Fusion

Special Theory of Relativity

General Theory of Relativity

Systems of Measurement

Filters