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Chapter 3: Electromagnetic Energy, Exams of Chemistry

University of Illinois - ChicagoChemistry

1. The four properties of photons are , , and . a. size, shape, spin, mass b. frequency, mass, amplitude, wavelength c. frequency, wavelength, velocity, amplitude d. refraction, velocity, spin, amplitude ANS: C The properties of photons are frequency, wavelength, velocity, and amplitude. DIF: Moderate REF: page 45 OBJ: Identify the properties of photons. 2. The smallest quantity of any type of electromagnetic radiation is a(n) _. a. photon b. electron c. neutrino d. quark ANS: A The smallest quantity of any type of electromagnetic radiation is a photon. DIF: Easy REF: page 45 OBJ: Define photons. 3. What is the velocity of all electromagnetic radiation?

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Chapter 3: Electromagnetic Energy
Test Bank
MULTIPLE CHOICE
1. The four properties of photons are , , and .
a. size, shape, spin, mass
b. frequency, mass, amplitude, wavelength
c. frequency, wavelength, velocity, amplitude
d. refraction, velocity, spin, amplitude
ANS: C
The properties of photons are frequency, wavelength, velocity, and amplitude.
DIF: Moderate REF: page 45 OBJ: Identify the properties of photons.
2. The smallest quantity of any type of electromagnetic radiation is a(n) _.
a. photon
b. electron
c. neutrino
d. quark
ANS: A
The smallest quantity of any type of electromagnetic radiation is a photon.
DIF: Easy REF: page 45 OBJ: Define photons.
3. What is the velocity of all electromagnetic radiation?
a. 8 103 m/s
b. 2 108 m/s
c. 3 108 m/s
d. 4 103 m/s
ANS: C
The velocity of all electromagnetic radiation is 3 108 m/s.
DIF: Moderate REF: page 45 OBJ: State the velocity of all electromagnetic radiation.
4. The rate of rise and fall of a sine wave is called its .
a. amplitude
b. frequency
c. wavelength
d. velocity
ANS: B
The rate of rise and fall of a sine wave is called its frequency.
DIF: Moderate REF: page 46 OBJ: Define wave frequency.
5. A hertz (Hz) is equal to cycle(s) per second.
a. 103
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Chapter 3: Electromagnetic Energy

Test Bank

MULTIPLE CHOICE

1. The four properties of photons are , , and.

a. size, shape, spin, mass

b. frequency, mass, amplitude, wavelength

c. frequency, wavelength, velocity, amplitude

d. refraction, velocity, spin, amplitude

ANS: C

The properties of photons are frequency, wavelength, velocity, and amplitude.

DIF: Moderate REF: page 45 OBJ: Identify the properties of photons.

2. The smallest quantity of any type of electromagnetic radiation is a(n) _.

a. photon

b. electron

c. neutrino

d. quark

ANS: A

The smallest quantity of any type of electromagnetic radiation is a photon.

DIF: Easy REF: page 45 OBJ: Define photons.

3. What is the velocity of all electromagnetic radiation?

a. 8  103 m/s

b. 2  108 m/s

c. 3  108 m/s

d. 4  103 m/s

ANS: C

The velocity of all electromagnetic radiation is 3  108 m/s.

DIF: Moderate REF: page 45 OBJ: State the velocity of all electromagnetic radiation.

4. The rate of rise and fall of a sine wave is called its.

a. amplitude

b. frequency

c. wavelength

d. velocity

ANS: B

The rate of rise and fall of a sine wave is called its frequency.

DIF: Moderate REF: page 46 OBJ: Define wave frequency.

5. A hertz (Hz) is equal to cycle(s) per second.

a. 103

b. 102

c. 10

d. 1

ANS: D

A hertz is equal to 1 cycle per second.

DIF: Moderate REF: page 46 OBJ: Define the hertz.

6. What is the electromagnetic wave equation?

a. b.

c. c = fv

d. ANS: A

The wave equation is.

DIF: Difficult REF: page 48 OBJ: Recognize the electromagnetic wave equation.

7. The of electromagnetic radiation is constant.

a. amplitude

b. velocity

c. frequency

d. wavelength

ANS: B

The velocity of electromagnetic radiation is constant.

DIF: Moderate REF: page 48 OBJ: Discuss the velocity of electromagnetic radiation.

8. If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, then its

frequency must.

a. double

b. increase four times

c. decrease by half

d. remain constant

ANS: C

If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, then its

frequency must decrease by half.

DIF: Difficult REF: page 48 OBJ: Discuss the relationship between electromagnetic radiation wavelength and frequency.

9. The intensity of radiation in proportion to the square of the distance of the object

from the source.

a. increases, direct

b. decreases, direct

c. increases, inverse

d. decreases, inverse

ANS: D

14. The energy of a photon is directly proportional to its.

a. amplitude

b. frequency

c. velocity

d. wavelength

ANS: B

The energy of a photon is directly proportional to its frequency.

DIF: Moderate REF: page 57 OBJ: Discuss the relationship between the energy and frequency of electromagnetic spectrum.

15. The mass equivalent of a 100 KeV photon of radiation can be calculated using the.

a. inverse square formula

b. equivalent Planck equation

c. relativity formula

d. Planck quantum equation

ANS: C

The mass equivalent of a 100 KeV photon of radiation can be calculated using the relativity

formula.

DIF: Difficult REF: page 57 OBJ: Understand how to calculate mass equivalency.

16. X-rays are usually identified by their.

a. energy

b. velocity

c. wavelength

d. hertz

ANS: A

X-rays are usually identified by their energy.

DIF: Moderate REF: page 56 OBJ: Discuss the electromagnetic spectrum.

17. The lowest energy range of the electromagnetic spectrum is.

a. sound waves

b. radio waves

c. gamma rays

d. microwaves

ANS: B

The lowest energy range on the electromagnetic spectrum is radio waves.

DIF: Moderate REF: page 50 OBJ: Discuss the electromagnetic spectrum.

18. Gamma rays are produced in the of the atom.

a. outer electron shell

b. inner electron shell

c. nucleus

d. K-shell

ANS: C

Gamma rays are produced in the nucleus of the atom.

DIF: Moderate REF: page 51 OBJ: Discuss the electromagnetic spectrum.

19. Photons tend to interact with matter their wavelength.

a. equal in size to

b. larger in size than

c. smaller in size than

d. unequal in size to

ANS: A

Photons tend to interact with matter equal in size to their wavelength.

DIF: Moderate REF: page 52 OBJ: Identify the properties of photons.

20. Photons with the highest frequencies have the.

a. highest velocity

b. lowest energy

c. longest wavelengths

d. shortest wavelengths

ANS: D

Photons with the highest frequencies have the shortest wavelengths.

DIF: Moderate REF: page 48 OBJ: Understand the relationship between frequency and wavelength.