The possession or use of any courmunications device

IP.S./CHEMISTRYThe Univers’rtrof the State of NewYorkREGENTS HIGH SCHOOLEXAMINAIONPHYSICAL SETTINGCHEMISTRYWednesd"y, J-uury29,2014-1:15 to 4:15 p.m., onlyThe possession or use of any courmunications device is strictly prohibited whentahng this examination. If you have or use any communioations device, no matter howbriefty, your exarnination will be invalidated and no score will be ealculated for you.This ls a tqst of yorrr lonowledge of ehemrstrT. Use that kaowledge to answer allquestions in this examination. Some guestions may require the use of the 2O77 EilitionRtferenae Tabl.es for Phgsical SeuingtClwmistry. You are to answer aII questions in allparts of this examination according to the directions provided in this cxaminationbooklet.A separate an$wer sbset for Part a and Part B-1 hss been provided to you’ FoUo-wthe instructions from lhe proctor for completing the ctudent information on youransvyer sheet. Record your answers to tte Part A and Part B-1 multiple-choicequestions on ttis separate answer sheet. Record your Bnswers for the questions inPart B-2 and Part e in your separate answer booklet. Be sure to ftIl in the f,sading onthe front of your answer booklet.All answers in your answer booklet should be wriften ln pen, except for graphs anddrawings, which should be done in pencil. You may use scrap paper to work out theanswers to the questiorrs, but be sure to record dl yoUf ansrvers on your separateanswer sheet or in your amswer booklet as directed.When you have completed the examination, you murt si8in the statement printedon yonr separate answer sheet, indicating that you had no udarvful kriowledge of thequestions or auswers prior to tfie examination and tha{ you have neither given norriceiveil assistance in answei{rig arly of the questions {urlrtg the examination. Youranstwer iheet and answer boo-klet cannotdeclaration.’Notice. .be acceptpd if you fail to sign this.A four-funetion or seientifte ealeulator and a eopy of the 2017 Eititirrn ReferenceTabl,esforPhgsical SettinglClwmistry must be available for you to use while taking this examination.DO NOT OPEN THIS EXAMINATION BOOKLET UNTIL THE SIGNAL IS GMN.AUISI1/I3HC/’SdPart AAnswer all questions in this part.Direc’ti.oru (1-30): For each statement or question, record on your separate answer sheet the number of theword or expression that, of those given, best completes the statement or answers the question. Some questionsmay require the use of the 2011 Edition Reference Tobles for Physinal Setting/Chemixtry.I(1) lu(2) 0.0005 ut7 What is formed when two atoms of bromineWhat is the approximate mass of a proton?bond together?(3) 1g(a) 0.0005 g(1)(2)(3)(4)2 An electron in a sodium atom gains enougher,ergt to move from the second shell to thethird shell. The sodium atom becomes(1) a positive ion(2) a negative ion(3) an atom in an excited state(a) an atom in the grorind state3 Which particle’8radioactive decay mode of the isotope Au-198(2) proton-to-neutron ratio in an atom of gold(3) nature of the bonds between gold atoms(4) reaptivity of gold atoms(3) positron(4) protonWhich term represents the attraction one atomhas for the electrons in a bond with another atom?(1) electronegativif(2) elebtrical conductivity(3) ftrst ionization enerry(4) meshardcal enerryprotons in an atom?5atomic numberoxidation numbernumber of neutronsnumber of valence electrons10 Salt w4fer is classified as a(1) compound because the proportion ofatoms is fixed(2) corypound because the proportion ofatolns can vary(3) mixture because the proportion ofcoryponents is fixed(4) mixture because the proportion ofcorpponents can varyThe element sulfur is classifted as a(l)metal(2) metalloid(3) nonmetal(4) noble gasQ The elements in Group 2 have similar chemicalproperties because each atom of these elementshas the same(1) atomic number(2) mass number(3) number of electron shells(4) number of valence electronsP.S./Chm.-Ju. ’14Gold oan be flattened into an extremely thinpre malleability of gold is due to the(t)4 Which quantity represents the number of(1)(2)(3)(4)a diatomic moleculea heterogeneous mixturea homogeneous mixturesheet.has no charge?(1) electron(2) neutrona monatomic rnoleeuleitsitsitsits11 Which substance can rwt be broken down by achemical change?(1) ammonia(2) arsenicl2l(3) ethane(4) propanal12Some physical properties of t’wo samples of iodine-l27 at two different temperatures are shown in the tablebelow.Selected Physical Properties of lodine-l27 $amples at 1 atmSampleSample TemperatureDescriptiqn(K)Density (g/cm3)1298dark-gray cry6tals4.9332525dark-purple ggs0.006These two samples are two different(1) mixtures(2) substances(3) phases of matter(4) isotopes of iodinet17 Two hydrogen atoms form a hydrogen molecule13 Powdered iron is magnetic, but powdered sulfuris not. What ocrurs when they form a mixture in awhenbeaker at room temperafure?(1)(2)(3)(a)L4TheTheTheThe(1) one atom loses avalence electron to the otheriron retains its magnetic properties.iron loses its metallic properties.sulfur gains magnetic properties.sulfur gains metallic properties.atoyn(2) one atom shares four electrons with the otheratoyn(3) tho’two atoms collide and both atoms gainenerry(a) the two atoms collide with sufffcient energyto fprm a bondWhich properly is a measure of the averagekinetic energy of the particles in a sample ofmatter?(l)mass(2) density151B(3) pressure(4) temperatureWhich type of formula represents the simplestwhole-pumber ratio of atoms of the elements ina compound?(1) molecular(2) c,oqdensedAccording to the kinetic molecular theorywhich statement describes the particles of anformula (3) empirical formulaformula (4) structural formula:ideal gas?in a regular19 The coBfffcients in abalanced chemical equation(2) The force of attraction between the gasparricles is strong,(3) The gas particles are hard spheres incontinuous circular motion.(4) The coions of the gas particles may resultin the transfer of energr.(1) the mass ratios of the substances in thereaption(2) the mole ratios of the substances in thereaction(3) &e total number of electrons in the reaction( ) the total number of elements in the reaction(t) Thegas particles are arrangedrepresontpattern.16The concentration of a solution canbe20 Systemptowardin(1) milliliters per minute(2) parts pir million(3) grams per kelvin(4) joules per gramexpressedP.S./Chem-fm. ’14innature tendtoundergo changes'(1)lower energy and higher entropy(2) Iowpr energr and lower entropy(3) highqr energy and higher entropy( ) higher energF and lower entropyl3llovERl21 Which formula represents(1) CaH2(2) C4H827 Which energy conversion must occuran organic compound?in anoperating electrolytic cell?(3) H2O2(4) P2O5(1)(2)(3)(4)Which class of organic compounds containselectricalelectricalchemicalchemicalenerS/ to chemical energyenerpyto nuclear energyenerEg/ to electrical energyenergy to nuclear energ/nitrogen?(1) aldehyde(2) alcohol23 Which term identilies(1) deposition(2) &stillation(3) amine(4) ethera type28 Which compound yields H+ ions as the onlypositive ions in an aqueous solution?(3) CHSOH(1) KOH(4) CH3COOH(2) NaOHof organic reaction?(3) esterification(4) sublimation29 Which statement describes the relative massesoof two different partic’les?24 Which compound is classified(1) butanal(2) butyneas ahydrocarbon?(1) A 4eutron has less mass than a positron.(2) A beta particle has less mass than a neutron.(3) An’ alpha particle has less mass than a(3) 2-butanol(4) 2-butanonepositron.(4)an oxidation-reduction reaction, the numberof electrons lost is25 In(1) equal to the number of electrons gained(2) equal to the number of protons gained(3) leis than the number of electrons gained(4) less than the number of protons gained26 WhichP.S./Chem.-Ju. ’14alpha particle has less mass than a beta30 Which term represents atype of nuclearreaction?(1)(2)(3)(4)substance is an electrolyte?(1) C6HrrO6(s)(2) CzHsOH(o)A,particle.(3) NaoH(s)(a) nz(g)I4lco4densationvapprizationsingle replacementnatural transmutationPartB-tAnswer all questions in this part.Directions (31-50): For ea.ch statement or question, record on your separate answer sheet the number of theword or expression that, of those given, best completes the statement or answers the question. Some questionsmay require the use of the 2011 Editinn Reference Tables for Physical Setting/Chernistry.35 When lithium reacts with bromine to form thecompound I iBr, each lithium atom31 Which ion has rhe smallest radius?(3) SeL(1) 02(2) 52(4) Te%(1) gains one electron and becomes a negativelych4rged ion(Z) gains three electrons and becomes anegativelychryged ion(3) loses one electron and becomes a positivelychqrged ion(4) Iosgs three electrons and becomes a positivelych4rged ionSZ nqrral amounts of ethanol and water are mixedat room temperature and at 101.3 kPa. Whichprocess is used to separate ethanol from themixture?(1) distillation(3) ftltration(4) ionization(2) reduction3633 A sample of a substance….water, |reat is transferred from(1) the ice cubes to the airmelting point of 984 Khard, brittle solid at room temperaturepoor conductor of heat and electricif as a solidgood conductor of electricity as a liquid or inan aqueous solutionThis sample is classified(2) the beaker to the air(3) the water to the ice cubes(a) the water to the beakerasJT(1) a metallic element(2) a radioactive element(3) a molecular compound( ) an ionic compoundMA beakBr with water and the surrounding air areall at t4’C. After ice cubes are placed in thehas these characteristics:Given the balanced equation representing areaction:sample of chlorine gas is at 300. K and1.00 at’mosphere. At which temperature andpressu1e would the sample behave more like anideal ggs?(1) 0 4 and 1.00 atm(2) 15q. K and 0.50 atm(3) 27q K and 1.00 atm(4) 60q. K and 0.50 atmANztenergy-+N*NWhich statement describes this reaction?(1) Bonds are broken, and the reactionendothermic.(2) Bonds are broken, and the reactionexothermic.(3) Bonds are formed, and the reactionendothermic.(4) Bonds are formed, and the reactionexothermic.P.S./Chm.-Jm.’1438 When qsample of agas is heatedin asealed,rigdcontai4er from 200. K to 400. K, the pressureisexerted by the gas is(1)(2)(3)(4)isisdecreased by a factor of 2increased by a factor of 2decreased by a factor of 200.incpeasedby a factor of200.ist5llovERl39 The bright-linespectra produced by four elements are represented in the diagram below.Bright’Line Spectra of Feur ElemefisWavelength (nm)"750 700 650 600 550 500 450rrltrtrlrrrrltrtrlrrrrlrrj"rll400lrlrrrrlrrElementAElement DElement XElement Zltrrlrrrrlrrrrlrrrrlrrrrltrttltrrtlttrrltr750 700 650 600 550 500 450 400Wavelength (nm)Given the bright-line spectrum of a mixture formed from two of these elements:750700650 600 550 500450Wavelength (nm)Which elements are present in this mixture?(3)(1) AandD(2) A andX(4)ZatdDZandx40 Thegraph below represents the reladonship between time and tgmperature as heat is added at a constantrate to a sample of a substance.o=(EoCLEPTimeDuring interval AB, which energr, change occurs for the particles in this sample?(f)The potential energy of the particles increases.(2) The potential energy of the particles decreases.(3) The average hnetic energF of the particles incre4ses.(a) The average kinetie ener5i of the p4rtieles deereases.P.S./Chm.-lm.’14t6l39 The bright-linespectra produced by four elements are represented in the diagram below.Bright-Line Speetra o- f Four ElementsWavelength (nm)"750 700 650 600 550 500 450rrlrrrrlrrrrlrrrrlrrrrlrl400lrlrrl rlrrrrlrrElementAElement DElement XElement Zilrrlrrrrlrrrrlrrrrlrrrrlrrrrlrrrrlrrrrlrr750 700 650 600 550 500 450 400Wavelength (nm)Given the bright-line spectrum of a mixture formed from two of these elements:750 700 650 600 550 500 450400lVavelength (nm)Which elements are present in this mixture?.(3) ZaqdD(1) AandD(2) A and X(4) Zndx40 The gaph belowrepresents the relationship between time and tgmperature as heat is added at a constantrate to a sample of a substance.oGoCLEgTimeDuring interval AB, which energiu change occurs for the particles in this sample?(1) The potential energy of the particles increases.(2) The potential energy of the particles decreases.(3) The average kinetic energy of the particles increases.( ) The averago hnetie energy of the particles decreases.P.S./Cha.-lm.’14t6l41 Given the potentialenerg;r diagramreversible chemical reaction :for46 What opcurs at one of the electrodes in both anelectrolytic cell and a voltaic cell?a(t)Oxidation occurs as electrons are gained atthe cathode.(2) Oddation occurs as electrons are lost at the:oE?anqde.E’/otr(3) Reduction occurs/UIaselectrons are lost at thecathode.(EEtroo47 Given the balanced equation representing areactiop:o.Reaction CoordinateHzO([) + HCI(g)– HrO+(aq) + Cl-(aq)Each interval on the axis labeled "PotentialEnergy (k/mol)" represents 10. hlojoules permole. What is the activation cncrg/ of theAccording to one acid-base theory the HrO(8)moiecrliPsforward reaction?(1) 10. k/mol(2) 30. k/mol42 Whichas electrons are gained atthe anode.(4) Reduction occurs(1) acoep!’H+ ions(2) acoept OH- ions(3) 40. k/mol(4) 60. k/moldeeays,an unsaturated compound?the Na-24 atom spontaneously releases(1) an alpha parEcle (3) a neutron(4) a positron(2) a bpta particle(1) CHSCHCHCH3 (3) cH3cHs(4) CH+(2) CH3CH9CH343 Which element reacts spontaneously with1.0 M HCI(aq) at room temperature?Which balanced equation represents nuclearfusion?(3) silver(4) nnc(1) ?H — lHe +-9"(2) ffiV — zffiTh + $He(s) ?H + !H—+ fHe(4) WU * [n—+ Ssr + l$]xe + s[,n44 Given the balanced ionic equation:3Pb2+(aq)+ 2Cr(s) –SPb(s)+ 2Cf+(aq)504ihat is the number of moles of electrons gainedby 3.0 moles of lead ions?(1) 5.0 mol(2) 2.0 molof the unstable isotope Na-24it becomes an atom of Mg-24 because48 When an.atomcondensed structural formula represents(1) copper(2) gold(3) donate H+ ions(4) donate OH- ionsWhich reaction releases the greatest. amount ofenergy per kilogram of reactants?p.(1) 6" + Hu -, rflBa + flaK. + Afi(2) 2C * Hr —+ Cnf{,(3) CsHe(g) + 5or(g) — sCo2(g) + 4H2o(t)(a) NapH(aq) + HCI(aq)–* NaCl(aq) + H2o(t)(3) 3.0 mol(4) 6.0 mol45 What is the amount of heat energy releasedwhen 50.0 grams of wateris cooled from 20.0"Cto 10.0oC?(1) 5.oo x ro2 J(2) 2.09 x 103 JP.S./Chem-fm. ’14(3) 1.67 x(4) r.13 x105 J106 J17ltovERlPart B-2Answer all questions in this part.Di,rections (51-65): Record your answers in the spaces provided in your answer booldet. Some questionsmay require the use of the 2011 Edition Reference Tables for Physi.cal Setting/Chemistry..Base your answers to questions 51 through 54 on the information below and on your knowledge of chemistry.The diagram below represents three elements in Grqup 13 and three elements inPeriod 3 and their relative positions on the Periodic Table.AISiPGalnSome elements in the solid phase exist in different forms that vary in their physicalproperties. For example, at room temperature, red phosphqnrs has a density of 2.16 il" ‘andwhite phosphorus has a density of 1.823 9"*t.51 Identi$ the element from the diagramwith the general formula XClr. [t]that will reactwit[ chlorine to form a compound52 Consider the Period 3 elements in the diagram in ordey of increasing atomic number.State the trend in electronegativity for these elements. I [r]Compare the number of atoms per cubic centimetel in red phosphorus with thenumber of atoms per cubic centimeter in white phosphqrus. [r]Identify one element from the &agram that will combinp with phosphorus in the sameratio of atoms as the ratio in aluminum phosphide. [t]P.S./Chem.-Jan. ’14l8lBase your answers to questions 55 through 57 on the information below and on your knowledge of chemistry’The compounds KNO3 and NaNOr are soluble in water,bb Compare the entropy of 30. grams of solid KNO3 at 20."C with the entropy of 30. gramsof KNO. dissolvedin 100. grams of water at 20.oC. [t]the total thermal energr of a sample coqtarring 22’2 gtams of NaNo3of ,disiolved irr 200. grams of water at 21."C is greiter than the total^thermal"l:lqygrams of water at 20’oC. [t]sample containin{ll.l grams of NaNO3 dissolved in 100,56 Explain why5lCompare the boiling point of a NaNO3 solution at standa;d pressure to the bofing pointof water at standard pressure. [r]Base your answers to questions 58 through 61 on the information below and on your knowledge of chemistry.Ethene and hydrogen can react at a faster rate in the prese-nce_of the catalyst platinum.The equation below represents a reaction between ethene 4pd hydrogen.[>c:"(X5B+H-H +HHItH-C-C-HtlHHDetermine the molzr mass of the product. [t]59 State the number of electrons shared tretween the car-bol atoms in one molecule of thereactant ethene.60[t]Erylairr, in tenns of activation enerry, why the catalped regction ocflus at61 Explain why the reaction is classifiedP.S./Chem.-|u. ’14as an additiontelafasterrate’ [t]reaotion. [t]lovERlaBaseyour .rnswers to questions 62 and 63 on the information below and on your knowledge of chemistry.In a titration, 50.0 milliliters of 0.026 M HCI(aq) is noutralized by 38.5 milliliters ofKOH(aq).62 In the qpace in yanr anmserbookle|’ of the KOH(aq). [r]show a numerical sofup for calculating the molarity63 Complete the equatior in you,r &rwwer booklet for the neutralization by writing theformula of the missing product. [t]Base your answersto questions&and 65 on the information below and on your Lnowledge of chemistry.Table sugar, sucrose, is a combination of two simple susars, glucose and fructose. Theformulas below represent these simple sugars.oHllH-CtlH-C-OHtlHO-C-HttH-C-OH1lH-C-OHll’H_C_OHllGlucoseIH-C-oHC=OHO-C-HH-C-pHH-C-pHH-C_OHFructosg64 Identify the functional group that appears more thanonoe in the fructose65 Explain, in terms of atoms and molecular structure,isomers of each other. [t]P.S./Chm-Jm.’14tt0lmolecule. tr]rrlrhy glucose and fructose arePart CAnswer all questions in this part.Directions (6G-B5): Record your answers in the spaces provided in your answer booklet. Some questionsmay require the use of the 2011 Edfnon Reference Tables for Physi,cal Settinglchemistry.Base your answers to questions 66 through 70 on the information below and on your knowledge of chemistry.Baking soda, NaHCO3, czn be commercially produced during a series of chemicalreactions called the Solvay process. In this process, NHs(aq), NaCl(aq), and other chemicalsare used to produce NaHCO3(s) and NHaCI(aq).To reduce production costs, NH3(aq) is recovered from pHnCl(aq) through a differentseries of reactions. This series of reactions can be summarized by the overall reactionrepresented by the unbalanced equation below.NHnCI(aq)66 Writea chemical name+ CaO(s)–* NH3(aq) +H2O(0)+CaCl2(aq)for baking soda. [t]67 Determine the percent composition by mass of carbon in bakingmass : 84 grams per mole). [t]68State the color of bromcresol greenina sample69 Determine theof NH3(aq). [i]mass of NHaCI that must be dissolveda saturated solution at 70.’C. [t]70 Balance the equationi.nyutranstDer bookletin 100. grams of H2O to producefor the ovefall reaction used to recoverNH3(aq), using the smallest whole-number coefficients.P.S./Chem.-Ju. ’14I1r lsoda (gram-formula[t]IovER]Base your answers to questions 71 through 75 on the information below and on your knowledge of chemistry.Rubbing alcohol is a product available at most pharmacies and supermarkets. Onerubbing alcohol solution contains 2-propanol and water. The bofing point of 2-propanol is82.3"C at standard pressure.’71Explain, in terms of electronegativity differences, why a p-O bond is more polar than72 lderrttfy a strong intermolecular force of attraction betwoenwater molecule in the solution. [t]an alcohol molecule and aaC-H bond. [t]73 Determine the vapor pressure of water at a temperaturB equal to the boiling point ofthe 2-propanol. [t]74 Explain, in terms of charge distribution, why a molecufe of the 2-propanol is a polarmolecule. [t]75 Inthespace in your anru;erbooklzt, dravta structural formula for the2-propanol. tr]Base your answers to questions 76 and 77 onthe information below and on your knowledge of chemistry.Silver-plated utensils were popular before stainless steelbecame widely used to makeeating utensils. Silver tarnishes when it comes in contact wit$ hydrogen sulfide, H2S, whichis found in the air and in some foods. However, stainless steel does not tarnish when itcomes in contact with hydrogen sulffde.76In the space in youransaer booklet, draw a LeVrs electron-dot &agram forsilver. [t]the compound that tarnishesTT Inthe ground state, an atom of which noble. the sulftde ion in AgrS? [t]P.S./Chm.-!m. ’14[12]gas has the same electron configuration asBase your answers to questions 78 through 81 on the information below and on your knowledge of chemistryCommon household bleach is an aqueous solution containing hypochlorite ions. Aclosed container of bleach is an equfibrium system represented by the equation below.Cb(g) +2oH-(aq)= Clo-(aq) + CI-(aq) + H2o(t,)78 Compare the rate of the forward reaction to the rate qf the reverse reaction for thissystem. [t]79State the change in oxidation number for chlorine whe4 the CL(g) changes to Cl-(aq)during the forward reaction.[t]B0 Explain why the container must be closed to maintain equfibrium. [r]81State the effect on the concentration of the CIO- ion when there is a d.ecrease in theconcentration of the OH- ion. Ir]Base your answers to questions 82 through 85 on the information below and on your knowledge of chemistry.Iodine has many isotopes, but only iodine-l27 is stable and is found in nature. Onera&oactive io&ne isotope, I-108, decays by alpha particle emission. Iodine-I3l is alsora&oactive and has many important medical uses.82 Determine the number of neutrons in an atom of l-127, [t]83 Explain, in terms of protonsof iodine. [t]and neutrons, why I-127 apd I-131 are different isotopes84 Complete the equation in yurransurer booklet for the rluclear decay of85 Determine the total time required for1.25 grams of the sample remainsP.S./Chem.-|m. ’14I-I08. [t]an 80.0-gram sample of I-131 to decayunchanged. [t][13]until only

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