Kaplan Full Length Test 2 - 02 MCAT FL Test2 06/26/2003...

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Physical Sciences Time: 100 Minutes Questions 1–77 DO NOT BEGIN THIS SECTION UNTIL YOU ARE T OLD T O DO SO. 02 MCAT FL Test2 06/26/2003 06:05 PM Page 1
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PHYSICAL SCIENCES DIRECTIONS: Most of the questions in the Physical Sciences test are organized into groups, with a descriptive passage preceding each group of ques- tions. Study the passage, then select the single best answer to each question in the group. Some of the questions are not based on a descriptive passage; you must also select the best answer to these questions. If you are unsure of the best answer, eliminate the choices that you know are incorrect, then select an answer from the choices that remain. Indicate your selection by blackening the corresponding circle on your answer sheet. A periodic table is provided below for your use with the questions. 2 GO ON TO THE NEXT PAGE. 1 H 1.0 2 He 4.0 3 Li 6.9 4 Be 9.0 5 B 10.8 6 C 12.0 7 N 14.0 8 O 16.0 9 F 19.0 10 Ne 20.2 11 Na 23.0 12 Mg 24.3 13 Al 27.0 14 Si 28.1 15 P 31.0 16 S 32.1 17 Cl 35.5 18 Ar 39.9 19 K 39.1 20 Ca 40.1 21 Sc 45.0 22 Ti 47.9 23 V 50.9 24 Cr 52.0 25 Mn 54.9 26 Fe 55.8 27 Co 58.9 28 Ni 58.7 29 Cu 63.5 30 Zn 65.4 31 Ga 69.7 32 Ge 72.6 33 As 74.9 34 Se 79.0 35 Br 79.9 36 Kr 83.8 37 Rb 85.5 38 Sr 87.6 39 Y 88.9 40 Zr 91.2 41 Nb 92.9 42 Mo 95.9 43 Tc (98) 44 Ru 101.1 45 Rh 102.9 46 Pd 106.4 47 Ag 107.9 48 Cd 112.4 49 In 114.8 50 Sn 118.7 51 Sb 121.8 52 Te 127.6 53 I 126.9 54 Xe 131.3 55 Cs 132.9 56 Ba 137.3 57 La * 138.9 72 Hf 178.5 73 Ta 180.9 74 W 183.9 75 Re 186.2 76 Os 190.2 77 Ir 192.2 78 Pt 195.1 79 Au 197.0 80 Hg 200.6 81 Tl 204.4 82 Pb 207.2 83 Bi 209.0 84 Po (209) 85 At (210) 86 Rn (222) 87 Fr (223) 88 Ra 226.0 89 Ac † 227.0 104 Rf (261) 105 Ha (262) 106 Unh (263) 107 Uns 108 Uno (265) 109 Une (267) * 58 Ce 140.1 59 Pr 140.9 60 Nd 144.2 61 Pm (145) 62 Sm 150.4 63 Eu 152.0 64 Gd 157.3 65 Tb 158.9 66 Dy 162.5 67 Ho 164.9 68 Er 167.3 69 Tm 168.9 70 Yb 173.0 71 Lu 175.0 90 Th 232.0 91 Pa (231) 92 U 238.0 93 Np (237) 94 Pu (244) 95 Am (243) 96 Cm (247) 97 Bk 98 Cf (251) 99 Es (252) 100 Fm (257) 101 Md (258) 102 No (259) 103 Lr (260) PERIODIC TABLE OF THE ELEMENTS 02 MCAT FL Test2 06/26/2003 06:05 PM Page 2
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Passage I (Questions 1–5) A continuous spectrum of light, sometimes called blackbody radiation, is emitted from a region of the Sun called the photosphere. Although the continuous spectrum contains light of all wavelengths, the intensity of the emit- ted light is much greater at some wavelengths than at oth- ers. The relationship between the most intense wavelength of blackbody radiation and the temperature of the emitting body is given by Wien’s law, λ = 2.9 3 10 6 / T , where λ is the wavelength in nanometers and T is the temperature in kelvins. As the blackbody radiation from the Sun passes through the cooler gases in the Sun’s atmosphere, some of the pho- tons are absorbed by the atoms in these gases. A photon will be absorbed if it has just enough energy to excite an elec- tron from a lower energy state to a higher one. The absorbed photon will have an energy equal to the energy difference between these two states. The energy of a pho- ton is given by E = h f = hc/ λ where h = 6.63 3 10 –34 J•s, Planck’s constant, and c = 3 3 10 8 m/s, the speed of light in a vacuum.
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Kaplan Full Length Test 2 - 02 MCAT FL Test2 06/26/2003...

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