Test 1 first letter of last name •• > Chemistry 10 - Dr. Kline Name__________________________________ __ January 10, 20 11 This test consists ofa combination of multiple choice and other questions. There should be a total of xx questions on four pages; please check to make sure that they are all here. Do not use your own tables, scratch paper or other information. Please turn off all cell phones, pagers and other communicatIon devices; they wif{ be conffscated if they make noise. No food. No water. No gum. No bathroom breaks. No scratch paper. A regular calculator 15 OK, but you may not use graphing or programmable calculators and they will be confiscated if they are dIscovered during the test. The test wilt end 90 minutes after it starts. The last page (5) is an info sheet that you may separate from the rest of the test; please check. out the information on said sheet before asking questions about missing information in the !Jcxtr. ~f_ the test. Multiple Choice Questions These thirteen questions are worth four points each, for a total of 52 points. Unless it is stated otherwise in a given problem, there is only one correct answer for each question. Answer each question by circling all letter(s) corresponding to the correct cholce(s) . If more than one answer is correct, you should circle all of the correct ones. It Is not necessary to show work for these quest ions; however, you may write on the exam. 1. Which of the following is/ are true sst~a~t:e~m~e~n~ts~'~~M~o~~. '~e;t~ha~n~O!!!lJ'-"""'riJ~ (3) Cesium is an alkali metal.C~ b. Tin is a transition metalS,».----___ ~Rad0n Isanable gas .:iI1.::::::::::::o< uv Iodine is a halogen. e. None of the above statements is true. 2. Which of the following is/are representative (main-group) elements? More than one answer may be correct ~-Aluminum I}-I D. Tungsten W .--:::--:::. ct~~~~.n O~ l~-i:;:1 e. None of them L2: 3. Which of the following would be expected to lose one or more electrons to form <l cation? More than one answer may be correct. \ @ ead (-'", b. ~elenium (c. jGbbalt Co ~odium No-... e. None of them 4. C~hastwo naturally-occurring isotopes, Cu-63 and Cu-65. Which has the greater natural abundance? '--};:U -63 f!-&.; ~ 6 5'S'-{ - Th;" .:, we<"t.-k ,j~!'r"-. Cu-65 (Jf: cv-G ] <>.-. <i.. Cu ~b r +-,:., c. Neither because they are present in equal amounts d. It is impossible to tell using any of the information provided with this test. C/IJ.<.,y-N 6'3.r () h-r~o.e u ...-.,... ,..e.. G - b-:3 S. Which of the following iS/are~~properties or changes? More than one may be. p a. Solid carbon dioxide (dry ice) sublimes to the gas phase. ~~.5 P"I~ cLca ... .)< :>-b. Ethano) is separated from vodka (a mixture of ethanol and water) by distillation. f (C,1:thanol is burned (reacts with oxygen) to produce carbon dioxide gas and water. ....l:. (r-'Sodium chloride dissolves in water. I { J __ .p e. None of them \ ~ ~. OT-1<\A1l'i.T1/'e -~ ~.; v 6..J",~'-'-);;;."""" -l 1W...... "'-ih,,,.,/d.tuCllvl r&-~ Page 1 of5 - Test lA-Chem 10 (Winter 20/ 1)1''bs>cclZ. I6. Which of the following is/ are true for the process of vaporization of water <it converts from a liquid to a gas)? More than one answer may be correct. Recall that a water molecule consists of two ~Aatoms and one h~eno atom bonded together (H-O-H) f1 a. The distances between the water molecules become smaller in the gas rhase. X ~la.... ~, , b. The water breaks down into hydrogen atoms and oxygen atoms<:;-N 0 'C> k. t.,.;.~ u..)u..lc:! 'be C/.1(Z> Wli ec:.Q c. The water breaks down into diatomic hydrogen and diatomic oxygen molecules (H-H and 0-0, f'" ...J respectively). W"\ d. The process is exothermic c::: :t\J\) li ~"\ -~ (Pru j 1 TG '-J ~.r....... k.J.. @ None of them \ __ ..Q.. (t2. ~-b ....t-..J 7. Which of t he following is/are true statements regarding endothermic reactions? More than one may be. a. The reactants (starting point) have a greater ent halpy (heat energy) than the products. i=-b. Energy is absorbed by the reaction as It occurs. I c. The reverse reaction would be exothermic. ""j d. If you hold a test tube in which one is occurring, the outside of the test tUQe wOI,.lId feel warm. H e. None of the above statements Is true. y.. "-..ic"",,!d ;;... I c (:,(c:! ~ ~"-~~~~~ 8. Which of the foHowing has th I rgest v ume? , lGl-i f;;....... l-1<\ .... .d.. a. 4 g of tungsten \"1' S?:lJ"04. ~~ ~l!. (~ b. 5 9 oflead I I . S '-j '>'-\;:0 d -.., V 'I = ~ '>l> b. ><--""c--~ a:A 9 of chromium t' IS-· ........... \-I J f. cd.. S')'\;\~ JRyt.p ; L . '--<f 3 9 of lead X. 1/. 3 '1 1:, ""~~do "J ;h loe ["" S<--V'-.:J s ";.t: ..1 (f.,fw,c-) -Ltf.Oe~... 5 9. How many significant figures should be in the answer to the expression (36.11 x 0.030) + 8.98 == ? following? _ I a.l ?6. f/y. O.o 30= 1·0 01';3 3 b.2 + 8-4:8' c.3 d. 4 e. ;:: 5 E.J 10. What is ~20 x 10-6 written in scientific notation with the same number of significant digits? d. 2.020 x 10.7 7b. 2.02 X 10. (2t.020 x 10.5 ~2.02 X 10-s e. none of these 11. How many 1-19 are in 2 x 10-4 dg? a .. 2 x lOS 1-19 b. 2 x 102 1-19 c. 2 x 1()4 1-19 d.2 x 103 1J9 cJ)2 x 101 I1g f. none of these 12. Which of t he following represe.qts the 6eS~IUme? a. 3 x 10-) ML 3 1-. LD -'-b. 3 X 105 mL "3 "1-10 2. l-. rc: "j)x 10-5 GL S "'" l (J ..... L- 'a:3 x 10$ nL -S1"-lu-\ L.. 13. Which of the following experiences the smalJest temperature increase, 6T, when 500. cal of heat energy Is applied? Assume that aH samples have the same mass a. tungsten b. lead c. chromium d. sliver e. It is impossible to tell without knowing what the mass is. Page 2 of 5 - Test 1A- Chem 10 (WInter 2011 )Other Questions Each of the following questions is worth the indicated number of points, for a total of 48 pOints. Please be sure to provide a ll of the information requested for each question. Show work with units for all calculations. 14. 10 points Provide the name for each of the following element symbols and the symbol for each of the names. Spelling counts! Sb ifJ.J IIi1'IVI\/::J K, JC t2~PTl! tJ Silicon '5'; Sn 17tJ Argon f/-, Ga GfrL L I UVI--, Magnesium iI/if; Mercury 115 K PcJTfI-SSI vV'--> SC S Clj-AJ DI (),."'-15.8 points Complete the following table. You need not show warle Include any non-zero charges with the element symbol in the "Symbol" column. Symbol Atomic -z: Number Mass A Number Number of Protons Number of Electrons Number of Neutrons