Question 1

As the speed of an object increases, its wavelength

Accepted Answer

A)   remains unchanged.
B)   decreases.
C)   increases.
D)   is zero. B

Question 2

In common physics terminology, a particle with a negative potential energy is in a(n) potential ______________.

Accepted Answer

well

Question 3

The "X" in X-ray stands for ______________.

Accepted Answer

"unknown"

Question 4

Calculate the energy E_n_,in electron volts, of a hydrogen atom's electron with n = 6.

Accepted Answer

The answer of Calculate the energy E_n_,in electron volts,...

Question 5

Optical scanners at the grocery store often use He-Ne ______________.

Accepted Answer

The answer of Optical scanners at the grocery store often...

Question 6

Which of these instruments is based on the theory of matter waves?

Accepted Answer

A)   Microwave oven
B)   X-ray tube
C)   Electron microscope
D)   Cathode ray tube

Question 7

Thomson discovered the ______________ in 1897.

Accepted Answer

The answer of Thomson discovered the ______________ in 1897....

Question 8

Glow-in-the-dark materials exhibit the phenomenon called

Accepted Answer

A)   phosphorescence.
B)   simulated absorption.
C)   fluorescence.
D)   stimulated emission.

Question 9

Aristotle's "continuous" model of matter was proved wrong about 1807 by

Accepted Answer

A)   Bohr.
B)   Thomson.
C)   Dalton.
D)   Rutherford.

Question 10

Who discovered the electron in 1897?

Accepted Answer

A)   Dalton
B)   Bohr
C)   Rutherford
D)   Thomson

Question 11

The energy of a photon equals ______________ multiplied by the frequency.

Accepted Answer

The answer of The energy of a photon equals ______________...

Question 12

Calculate the radius in nanometers of the orbit of a hydrogen atom's electron with n = 5.

Accepted Answer

A)   0.27
B)   2.7
C)   1.3
D)   0.13

Question 13

Which of these colors of light has photons of lowest energy?

Accepted Answer

A)   Blue
B)   Green
C)   Yellow
D)   Red

Question 14

The transitions of an electron in the hydrogen atom to the n = 3 level result in the

Accepted Answer

A)   Lyman series.
B)   Balmer series.
C)   Paschen series.
D)   Bohr series.

Question 15

When an electron in an atom falls from a higher energy level to a lower one, a ______________ is ______________.

Accepted Answer

A)   proton; absorbed
B)   proton; emitted
C)   photon; absorbed
D)   photon; emitted

Question 16

The frequency and energy of a photon are ______________ proportional.

Accepted Answer

The answer of The frequency and energy of a photon...

Question 17

A quantum is a

Accepted Answer

A)   discrete amount.
B)   fundamental property.
C)   unit of momentum.
D)   proton.

Question 18

Which is not a possible value for the principal quantum number n?

Accepted Answer

A)   3
B)   7
C)   3/2
D)   None of these

Question 19

Who developed the quantum theory in 1900 and has a constant named for him?

Accepted Answer

A)   de Broglie
B)   Bohr
C)   Planck
D)   Einstein

Question 20

Who discovered the nucleus of the atom in 1911?

Accepted Answer

A)   Thomson
B)   Rutherford
C)   Dalton
D)   Bohr

Exam 9: Chemical Reactions

As the speed of an object increases, its wavelength

In common physics terminology, a particle with a negative potential energy is in a(n) potential ______________.

The "X" in X-ray stands for ______________.

Calculate the energy E_n_,in electron volts, of a hydrogen atom's electron with n = 6.

Optical scanners at the grocery store often use He-Ne ______________.

Which of these instruments is based on the theory of matter waves?

Thomson discovered the ______________ in 1897.

Glow-in-the-dark materials exhibit the phenomenon called

Aristotle's "continuous" model of matter was proved wrong about 1807 by

Who discovered the electron in 1897?

The energy of a photon equals ______________ multiplied by the frequency.

Calculate the radius in nanometers of the orbit of a hydrogen atom's electron with n = 5.

Which of these colors of light has photons of lowest energy?

The transitions of an electron in the hydrogen atom to the n = 3 level result in the

When an electron in an atom falls from a higher energy level to a lower one, a is .

The frequency and energy of a photon are ______________ proportional.

A quantum is a

Which is not a possible value for the principal quantum number n?

Who developed the quantum theory in 1900 and has a constant named for him?

Who discovered the nucleus of the atom in 1911?

Exam 9: Chemical Reactions

As the speed of an object increases, its wavelength

In common physics terminology, a particle with a negative potential energy is in a(n) potential ______________.

The "X" in X-ray stands for ______________.

Calculate the energy En, in electron volts, of a hydrogen atom's electron with n = 6.

Optical scanners at the grocery store often use He-Ne ______________.

Which of these instruments is based on the theory of matter waves?

Thomson discovered the ______________ in 1897.

Glow-in-the-dark materials exhibit the phenomenon called

Aristotle's "continuous" model of matter was proved wrong about 1807 by

Who discovered the electron in 1897?

The energy of a photon equals ______________ multiplied by the frequency.

Calculate the radius in nanometers of the orbit of a hydrogen atom's electron with n = 5.

Which of these colors of light has photons of lowest energy?

The transitions of an electron in the hydrogen atom to the n = 3 level result in the

When an electron in an atom falls from a higher energy level to a lower one, a ______________ is ______________.

The frequency and energy of a photon are ______________ proportional.

A quantum is a

Which is not a possible value for the principal quantum number n?

Who developed the quantum theory in 1900 and has a constant named for him?

Who discovered the nucleus of the atom in 1911?

Calculate the energy E_n_,in electron volts, of a hydrogen atom's electron with n = 6.

When an electron in an atom falls from a higher energy level to a lower one, a is .