Chem practice
Kull Key Chemistry 105 Practice Test 3 Spring 2007
Student: ________________________
The actual test will have 15 multiple choice, select 12 for grading, and 5 or 6 workout problems. There are no work-out problems here, bur the types of required computations are seen in the multiple choice problems here. I will place an updated equation sheet on the web by Wednesday morning, as well as post the answer key.
1 Who proposed a model that successfully explained the photoelectric effect?
A. Planck
B. Einstein
C. Compton
D. Rydberg
E. Bohr 2. Select the arrangement of electromagnetic radiation which starts with the lowest wavelength and increases to greatest wavelength.
A. radio, infrared, ultraviolet, gamma rays
B. radio, ultraviolet, infrared, gamma rays
C. gamma rays, radio, ultraviolet, infrared
D. gamma rays, infrared, radio, ultraviolet
E. gamma rays, ultraviolet, infrared, radio 3. Electromagnetic radiation of 500 nm wavelength lies in the ________ region of the spectrum.
A. infrared
B. visible
C. ultraviolet
D. X-ray
E. γ-ray 4. The AM station KBOR plays your favorite music from the 20's and 30's at 1290 kHz. Find the wavelength of these waves.
A. 4.30 × 10-2 m
B. 0.144 m
C. 6.94 m
D. 232 m
E. > 103 m 5. A photon has an energy of 5.53 × 10-17 J. What is its frequency in s-1?
A. 3.66 × 10-50 s-1
B. 1.20 × 10-17 s-1
C. 3.59 × 10-9 s-1
D. 2.78 × 108 s-1
E. 8.35 × 1016 s-1 6. Use the Rydberg equation to calculate the frequency of a photon absorbed when the hydrogen atom undergoes a transition from n1 = 2 to n2 = 4. (R = 1.096776 × 107 m-1)
A. 2.056 × 106 s-1
B. 2.742 × 106 s-1
C. 6.165 × 1014 s-1
D. 8.226 × 1014 s-1
E. > 1015 s-1
7. The size of an atomic orbital is associated with
A. the principal quantum number (n).
B. the angular momentum quantum number (l).
C. the magnetic quantum number (ml).
D. the spin quantum number
Student: ________________________
The actual test will have 15 multiple choice, select 12 for grading, and 5 or 6 workout problems. There are no work-out problems here, bur the types of required computations are seen in the multiple choice problems here. I will place an updated equation sheet on the web by Wednesday morning, as well as post the answer key.
1 Who proposed a model that successfully explained the photoelectric effect?
A. Planck
B. Einstein
C. Compton
D. Rydberg
E. Bohr 2. Select the arrangement of electromagnetic radiation which starts with the lowest wavelength and increases to greatest wavelength.
A. radio, infrared, ultraviolet, gamma rays
B. radio, ultraviolet, infrared, gamma rays
C. gamma rays, radio, ultraviolet, infrared
D. gamma rays, infrared, radio, ultraviolet
E. gamma rays, ultraviolet, infrared, radio 3. Electromagnetic radiation of 500 nm wavelength lies in the ________ region of the spectrum.
A. infrared
B. visible
C. ultraviolet
D. X-ray
E. γ-ray 4. The AM station KBOR plays your favorite music from the 20's and 30's at 1290 kHz. Find the wavelength of these waves.
A. 4.30 × 10-2 m
B. 0.144 m
C. 6.94 m
D. 232 m
E. > 103 m 5. A photon has an energy of 5.53 × 10-17 J. What is its frequency in s-1?
A. 3.66 × 10-50 s-1
B. 1.20 × 10-17 s-1
C. 3.59 × 10-9 s-1
D. 2.78 × 108 s-1
E. 8.35 × 1016 s-1 6. Use the Rydberg equation to calculate the frequency of a photon absorbed when the hydrogen atom undergoes a transition from n1 = 2 to n2 = 4. (R = 1.096776 × 107 m-1)
A. 2.056 × 106 s-1
B. 2.742 × 106 s-1
C. 6.165 × 1014 s-1
D. 8.226 × 1014 s-1
E. > 1015 s-1
7. The size of an atomic orbital is associated with
A. the principal quantum number (n).
B. the angular momentum quantum number (l).
C. the magnetic quantum number (ml).
D. the spin quantum number