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apch02_pt09_ans - South Pasadena AP Chemistry 2 o Atoms and...

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Unformatted text preview: South Pasadena - AP Chemistry 2 o Atoms and Elements 2. 7. Certain properties are characteristic of metals. Which property means that you can pound the substance into a foil? am of); on. no“ a) ity tiff-3 c) sectility b conductivi malleabilit ) (y m found yt'W Sofas?) Which of the following is a metalloid? As b) Ag e) s d) Pb c) He Which of the following is a transition metal? a)Cl Ni e)P e)c; e)C Which of the following is an alkali metal? a)Mg b)l(r @K d)Al e)H Which of the following is an lanthanide? a) Xe @Bu c) Cd d) P e) W Which element has the highest melting point? a) P!) b) Au 0) 0s W e) Hg use—Lb Pot?— Bw-b HLRMM‘U Cathode rays start at the negative electrode e) positive electrode b) power source d) gas inside the tube Canal rays are a) neutrons @positivc ions b) protons d) electrons Listed below are the charges and masses of four particles. Which One will be deflected the le_a.5_t in a mass spectrometer? Lmfi on. crime a) +2, 2 mm c) +1. 1 arm b) +4,4amu @ +1,4amu Namc_iééY——_ Period Date _,I__/_ PRACTICE TEST H]. In a Millikan oil (110;) type experiment, the charge on four oil drops (in Coulombs) was found to be: \ f‘ ’7 523'” :L 3.33 Coulombs 2M 8.83 Cordaan W109, 2 6.66 Coulornbs W 3. 33 ILIO Coulombs What is the charge on the electron according to this experiment? 3-33 : g ‘r '5 c) 4.44 Coulomb b) 2.22 Coulomb d) 11.10 Coulomb ll. Pictured below is a schematic of the Rutherford experiment. Which scattered a-panicle gives the best evidence for the nuclear atOm‘? 3 /lb or . —‘I-c m1 540105” / \ mam OH" d 05 0:. 33’s 9 I» b 12 Which of the following is an isotope of the element with 20 protons (p=_29) and 22 neutrons (n=_2_2)? = C“ '42 a) titanium-22 ® calcium-40 b) zirconium-40 d) titanium-48 e)c d)d e)c 13. The imaginary clement X has the following natural abundances and isotopic mames. What is the atomic weight of X? f; x 24.02 amu 40.0% f: x 26.10 amu 60.0% Show your work: Q40”) (pzq4a10nu3 *- 6600} (aka) am) = .2 s. at (98 '3 (FE—*1 yam For questions 14 - 18. use the following key: 23. Consider the following notation: 11° Rn (each answer may be used once. more than once. Which statement below is correct? or not at all) This particle contains 86 protom :1) alpha b) This particle has a mass number of 86 b) beta c) This particle has an atomic number of 220 e) garmna d) This particle contains 220 neutrons d) alpha and beta, but not gamma 24. Which elements did Mendeleev leave spaces for in C [4. A high energy form of light No7 9’9 his periodic table? 'rea 7 (5 Is. Associated with a Won 62.. .62 .34; 6 l6. A high Spoed electron A l7. Used by Ernest Rutherford as a "probe" 25. If copper metal is a mixture two isotopes. Ctr-63, C l8. Most penetrating of the “Bequercl Rays" mess - 62.9298 u and Cu-65. mass = 64.9278 u. The molar mass of copper is 64.546 g/mole. For questions l9 - 22. use the following key: Calculate the % abundances of the two isotopes of (each answer me be used once. more than onoe. r. Show or work. ornotatall.) y 9032273 icy: b4.9218(l—u) 494.5% m. a) JohnDelton eg,ng%¥+¢4.ems-(pté.¢ta7ox= (9‘4-5‘16 M“ b) Ernest Rutherford c) JJ. Thomson d) Democritus = Oo‘q A- 19. His model of the atom has been called the “billiard bell“ model. Element names llnlsh these sentences. - A ridiculous inmate is 33;. v I bumped my 9—9- the car door. - I am sad when all the flowers A’_". 0 What the police olfioer does to the crook. Q} o What thedoctor does tothe patient. in. or lie 0 What the undertaker does it the doctor doesn't succeed. Ba. - If your cattle get away. Q - A famous London theatre is the Demonstrations help keep the lectures from getting E. Linoleum. tile. and hardwood are three 1- - - of f. C 20. He studied matter in cathode ray tubes. ‘D 21. His philosopth idea included the term “atomos”. C 22. He added to the atomic theory the idea that atoms had positive and negative pens. ...
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