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XIX. Chemistry, High School

XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Page 1: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

XIX. Chemistry, High School

Page 2: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

330

High School Chemistry TestThe spring 2012 high school Chemistry test was based on learning standards in the Chemistry content strand of the Massachusetts Science and Technology/Engineering Curriculum Framework (2006). These learning standards appear on pages 69–73 of the Framework.

The Science and Technology/Engineering Curriculum Framework is available on the Department website at www.doe.mass.edu/frameworks/current.html.

Chemistry test results are reported under the following four MCAS reporting categories:

■ Atomic Structure and Periodicity

■ Bonding and Reactions

■ Properties of Matter and Thermochemistry

■ Solutions, Equilibrium, and Acid-Base Theory

Test Sessions

The high school Chemistry test included two separate test sessions, which were administered on consecutive days. Each session included multiple-choice and open-response questions.

Reference Materials and Tools

Each student taking the high school Chemistry test was provided with a Chemistry Formula and Constants Sheet/Periodic Table of the Elements. Copies of both sides of this formula sheet follow the final question in this chapter.

Each student also had sole access to a calculator with at least four functions and a square-root key.

The use of bilingual word-to-word dictionaries was allowed for current and former English language learner students only, during both Chemistry test sessions. No other reference tools or materials were allowed.

Cross-Reference Information

The table at the conclusion of this chapter indicates each item’s reporting category and the framework learning standard it assesses. The correct answers for multiple-choice questions are also displayed in the table.

Page 3: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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ChemistrySeSSion 1

DIRECTIONSThis session contains twenty-one multiple-choice questions and two open-response questions. Mark your answers to these questions in the spaces provided in your Student Answer Booklet. You may work out solutions to multiple-choice questions in the test booklet.

ID:229504 A Common EQ

 ●2 Cobalt has an atomicmassof 59 andan atomicnumberof 27.What does this information reveal aboutmostcobalt atoms?

A. They containmoreneutrons thanprotons.

B. Theynaturally have a net negative charge.

C. They attract protonsmore strongly than electrons.

D. They form ionswith a charge of127 in compounds.

ID:252678 A Common EQ

 ●1 Whichof the following statementsdescribes thedifferencebetweenendothermic and exothermic chemicalreactions?

A. Energy is absorbed in endothermicreactionsbut is released inexothermic reactions.

B. Energy is conserved in endothermicreactionsbut is not conserved inexothermic reactions.

C. Endothermic reactions involvechanges in thenucleusof an atom,but exothermic reactionsdonotinvolve changes in thenucleus.

D. Endothermic reactionsoccurwhenelectrons are sharedbetween atoms,but exothermic reactionsoccur when electrons are transferredbetween atoms.

Page 4: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 1

ID:260036 vp_graphsVH48.eps [opt_a0 D Common EQ

 ●3 A liquidboilswhen its vapor pressure equals thepressureof the atmosphere.A student createsa graphof vapor pressure as a functionof temperature for purewater and for a solutionofwater and sucrose.

Whichof the followinggraphsbest represents vapor pressure as a functionof temperature forthe two liquids?

A.

1

100

Temperature (°C)

Vap

or P

ress

ure

(atm

)

Water-sucrosesolution

Pure water

C.

1

100

Temperature (°C)

Vap

or P

ress

ure

(atm

)

Water-sucrosesolution

Pure water

B.

1

100

Temperature (°C)

Vap

or P

ress

ure

(atm

)

Water-sucrosesolution Pure water

D.

1

100

Temperature (°C)

Vap

or P

ress

ure

(atm

) Water-sucrosesolution

Pure water

Page 5: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 1

ID:229678 3210287_AR1.eps C Common EQ

 ●4 Thediagrambelow represents onemolecule ofmethane (CH4).

HH C

H

H

Whichof the following is a balancedequation for the synthesis ofmethanefromcarbon andhydrogen?

A. C H CH4

B. C H CH4 4

C. C H CH2 2 4

D. C H CH2 44

ID:216946 C Common EQ

 ●5 Whichof the following subatomicparticles canbe found inside thenucleusof an atom?

A. electronsonly

B. neutronsonly

C. protons andneutrons

D. protons, neutrons, and electrons

Page 6: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 1

ID:252153 A Common EQ

 ●6 The tablebelowcontainsdata formercuryandwater at standardpressure.

SubstanceMelting

Point (°C)Boiling

Point (°C)

mercury 39 357

water 0.0 100

Basedon thedata in the table,whichofthe followingpairs of substances couldexist at the same temperature?

A. ice and liquidmercury

B. liquidwater and solidmercury

C. water vapor and solidmercury

D. liquidwater andmercuryvapor

Page 7: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 1

ID:261470 D Common EQ

 ●9 A student adds ironfilings to acopper(II) chloride solution at roomtemperature.Abalanced equation for thereaction that occurs is shownbelow.

Fe(s) CuCl (aq) FeCl (aq) Cu(s)2 2

Whichof the following changeswouldmost likely increase the reaction rate?

A. using larger pieces of iron

B. performing the reaction in an ice bath

C. decreasing thevolumeof theCuCl2 solution

D. increasing the concentrationof theCuCl2 solution

ID:281962 B Common EQ

 ●10 The equationbelow shows the reactionof ammoniawithwater.

NH g H O NH aq OH aq3 2 4( ) ( ) ( ) ( )l

According to theBrønsted-Lowrytheoryof acids andbases,whichof thefollowing is acting as the acid for theforward reaction?

A. NH3B. H2O

C. NH4+

D. OH–

ID:206670 D Common EQ

 ●7 Three identical balloons each containonemoleof gas.Oneballoon containsoxygen, one contains nitrogen, andonecontains argon.

Whichof the following changes involumewill happen if theballoons areplaced in awarmer room?

A. Theballoonwith argonwill decreasemost in volumebecause argon is anoble gas.

B. All of theballoonswill decreasein volume equally because thetemperature increased.

C. Theballoonwithoxygenwillincreasemost in volumebecauseoxygenhas the largestmolecules.

D. All of theballoonswill increase involume equally because theyhaveequal numbers ofmolecules.

ID:275846 B Common EQ

 ●8 Howmanyelectronsare in theoutermostenergy shellof a calciumatom?

A. 1

B. 2

C. 6

D. 8

Page 8: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 1

Question 11 is an open-response question.

• BE SURE TO ANSWER AND LABEL ALL PARTS OF THE QUESTION.• Show all your work (diagrams, tables, or computations) in your Student Answer Booklet.• If you do the work in your head, explain in writing how you did the work.

Write your answer to question 11 in the space provided in your Student Answer Booklet.

ID:206688 206688_acid_base.eps Common EQ

 ●11 Thediagramsbelow showa0.1Maqueous solutionofHCl and a 0.1Maqueous solutionofHF.

0.1 MHCl

0.1 MHF

H+H+

H+

H+

H+

H+

H+

H+ H+H+

H+

F–F–

HF

HF

HF

HF HFHF

HF

HF

Cl–

Cl–Cl–

Cl–

Cl– Cl–Cl–

Cl–

Cl–

Cl–

H+

a. IdentifyHCl andHFas acids or bases.Explainyour answer.

b. ThepHof the0.1MHCl solution is expected to be lower than thepHof the0.1MHF solution.Explainwhy, basedon thediagramsof the solutions and thedefinitionof pH.

Page 9: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

337

Chemistry Session 1

Mark your answers to multiple-choice questions 12 through 22 in the spaces provided in your Student Answer Booklet. Do not write your answers in this test booklet, but you may work out solutions to multiple-choice questions in the test booklet.

ID:287584 B Common EQ

 ●12 Whichof the following statementsbestdescribeswhat happens towater duringevaporation?

A. The temperature of thewaterincreases until thewatermoleculesreactwithnitrogen in the air.

B. Watermolecules on the surfaceovercome intermolecular forces andchange into thegas phase.

C. Watermoleculeson the surface comein contactwith airmolecules and arepulled into thegas phase.

D. The temperature of thewaterincreases until thewatermoleculesseparate and formoxygen andhydrogengas.

ID:288254 AVEBRY075_potassiumchlori A Common EQ

 ●13 Whichof the following is a correctLewis dot structure for potassiumchloride?

A. ClK [ ]

B. ClK [ ]

C. ClK2 [ ]2

D. ClK2 [ ]2

Page 10: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 1

ID:287569 A Common EQ

 ●14 Whichof the following statements bestdescribes a differencebetweennuclearfission andnuclear fusion reactions?

A. Nuclei split duringfission andcombineduring fusion.

B. Fission formsheavier elements, andfusion forms lighter elements.

C. Fissiongenerates potential energy,and fusiongenerates kinetic energy.

D. Nuclei gain electronsduringfissionand release electronsduring fusion.

ID:275840 A Common EQ

 ●15 Iron(II) chloride (FeCl2) is a product ofthe reactionbetween ironmetal (Fe) andhydrochloric acid (HCl), as shown in theequationbelow.

Fe HC1 FeC1 H2 2 2

What is the change in oxidationnumberof iron in this reaction?

A. from0 to 2

B. from 1 to 2

C. from0 to 2

D. from 1 to 2

Page 11: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 1

ID:260041 D Common EQ

 ●16 The reductionof carbondioxidebyhydrogengas takes place at 420°C toproducewater vaporand carbonmonoxide.The equation for this reaction at equilibrium is shownbelow.

H (g) CO (g) H O(g) CO(g)2 2 2

Whichof the following changes in concentrationoccurwhenmorewater vapor is added to thesystemunder equilibriumconditions?

A. [H2] decreases, [CO2] decreases, [CO] increases

B. [H2] decreases, [CO2] decreases, [CO]decreases

C. [H2] increases, [CO2] increases, [CO] increases

D. [H2] increases, [CO2] increases, [CO]decreases

Page 12: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 1

ID:258965 014_shape_opts.eps [opt_a C Common EQ

 ●17 Whichof the followingmodelsbestrepresents the shapeof a compoundwithtrigonal planar geometry?

A.

B.

C.

D.

ID:216949 D Common EQ

 ●18 Aneutral atomhasanouter shell electronconfigurationof 2s22p6.Towhichof thefollowinggroupsof elements does itbelong?

A. alkalimetals

B. alkaline-earthmetals

C. halogens

D. noble gases

Page 13: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 1

ID:264340 A Common EQ

 ●20 Inwhichof the following lists are theelements shown inorder of increasingelectronegativity?

A. Li,Be,O,F

B. O,F,Be,Li

C. F,Li,O,Be

D. Li,F,Be,O

D:260762 B Common EQ

 ●19 Whichof the following statementsbest explainswhywater has a highsurface tension?

A. The forceof attractionbetweenneighboringpolarwatermolecules isweak.

B. The forceof attractionbetweenneighboringpolarwatermolecules is strong.

C. The forceof attractionbetweenneighboringnonpolarwatermolecules isweak.

D. The forceof attractionbetweenneighboringnonpolarwatermolecules is strong.

Page 14: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 1

ID:229235 B Common EQ

 ●21 Thebalanced equationbelow representsthe reactionofNaOHwithH3PO4.

NaOH H PO NaH PO H O3 4 2 4 2

When20gofNaOHreactswith49gofH3PO4, 9gofwater isproduced.HowmanygramsofNaH2PO4 areproduced?

A. 11g

B. 60g

C. 69g

D. 78g

ID:264310 B Common EQ

 ●22 The averagedistancebetweenmoleculesalways increases duringwhichof thefollowingphase changes?

A. gas to solid

B. liquid to gas

C. gas to liquid

D. liquid to solid

Page 15: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

343

Chemistry Session 1

Question 23 is an open-response question.

• BE SURE TO ANSWER AND LABEL ALL PARTS OF EACH QUESTION.• Show all your work (diagrams, tables, or computations) in your Student Answer Booklet.• If you do the work in your head, explain in writing how you did the work.

Write your answer to question 23 in the space provided in your Student Answer Booklet.

ID:261154 Common EQ

 ●23 Several properties for zinc (Zn) are listedbelow:

• brittle at room temperature, butmalleable between100°Cand150°C

• bluish-white in color

• burns in air at high temperatures, givingoff zincoxide (ZnO)gas

• conducts heat and electricity

• sinks inwater

• reactswith acids andbases

• exposed surfaces tarnish inmoist air

a. Identify two physical properties of zinc from the list.Explainwhy theproperties youidentified are physical properties andnot chemical properties.

b. Identify two chemical properties of zinc from the list.Explainwhy theproperties youidentified are chemical properties andnot physical properties.

Page 16: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

344

ChemistrySeSSion 2

DIRECTIONSThis session contains nineteen multiple-choice questions and three open-response questions. Mark your answers to these questions in the spaces provided in your Student Answer Booklet. You may work out solutions to multiple-choice questions in the test booklet.

ID:216947 C Common EQ

 ●24 In radiocarbondating, carbon-14undergoesdecay to becomenitrogen-14.

C N e14 14 06 7 1−→ 1

What typeof reaction is this?

A. fusion

B. neutralization

C. nuclear

D. oxidation

ID:252564 A Common EQ

 ●25 Whichof the following ideaswasproposedbyNielsBohr?

A. Electronsoccupy specific energylevelswithin an atom.

B. Thenucleusof an atomcontainsneutrons aswell as protons.

C. Anatom is a solid sphere that cannotbe separated into smaller parts.

D. An atomconsists of negative chargesembedded in a positively chargedsphere.

ID:229517 D Common EQ

 ●26 Carbonreactswithchlorine to form 4CCl .What is thenameof thiscompound?

A. carbon4-chloride

B. 1-carbon4-chloride

C. tetracarbon chloride

D. carbon tetrachloride

Page 17: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

345

Chemistry Session 2

ID:287582 C Common EQ

 ●27 Astudent has 84.0gofN2 gas in a sealed500L container at 20°C.Whichof the followingequations should the studentuse tocalculate thegaspressure?

A.1mol

P 84.0g R 500L28g

5 3 3 3

B.28g

P 84.0g R 293 K 500L1mol

5 3 3 3 3

C.

1mol84.0g R 293 K

28gP

500L

3 3 3

5

D.

28g84.0g R

1molP500L

3 35

Page 18: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

346

Chemistry Session 2

ID:258930 A Common EQ

 ●28 Awalk-in cooler has a volumeof1 1 104. L. If the temperature insidethe cooler is 3°Cand thegas pressureis 1.0 atm, howmanymoles of gas areinside the cooler?

A. 4 9 102. mol

B. 4 5 104. mol

C. 2 5 105. mol

D. 6 0 1023. mol

Page 19: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 2

ID:216953 D Common EQ

 ●29 Aluminum (Al) has three electrons inits outer shell.Oxygen (O)needs twoelectrons to complete its outer shell.What is the chemical formula foraluminumoxide?

A. AlO

B. 2AlO

C. 2Al O

D. 2 3Al O

ID:258937 B Common EQ

 ●30 Whichof the following statementsbestexplainswhy ionic solids dissolve inwater?

A. Water has high surface tension.

B. Water is a highlypolarmolecule.

C. Water ismoredense as a liquid thanas a solid.

D. Water has a higher boilingpoint thanpredictedby itsmolarmass.

ID:273206 D Common EQ

 ●31 The chemical equationbelow representssulfur trioxide (SO3) in the atmospheremixingwith rainwater to form sulfuricacid (H2SO4),which is amajorcomponent of acid rain.

SO (g) H O( ) H SO ( )3 2 2 4l l

Themolarmass ofSO3 is 80.1g/moland themolarmass ofH2SO4 is98.1g/mol.HowmuchH2SO4 isproducedwhen128.0gofSO3mixeswith rainwater?

A. 98.1g

B. 105g

C. 128g

D. 157g

ID:275834 B Common EQ

 ●32 Whichof the following actionsdecreases the entropyof a system?

A. boilingwater

B. freezingwater

C. dissolving salt inwater

D. mixingbaking soda and salt

Page 20: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

348

Chemistry Session 2

Question 33 is an open-response question.

• BE SURE TO ANSWER AND LABEL ALL PARTS OF EACH QUESTION.• Show all your work (diagrams, tables, or computations) in your Student Answer Booklet.• If you do the work in your head, explain in writing how you did the work.

Write your answer to question 33 in the space provided in your Student Answer Booklet.

ID:287891 Common EQ

 ●33 Five chemical reactions are listed in the table below.

Reaction 1 CaCO CaO CO3 2

Reaction 2 Ca(OH) HCl CaCl 2H O 2 2 22

Reaction 3 NH HCl NH Cl3 4

Reaction 4 PbO Pb O2 2

Reaction 5 2Mg O MgO2 2

a. Identifyone chemical reaction from the list that is a synthesis (combination) reaction.Explainwhyyou identified this reaction as synthesis.

b. Identifyone chemical reaction from the list that is a decomposition reaction.Explainwhyyou identified this reaction as decomposition.

c. Describe a combustion reaction.

d. Write a balanced chemical equation for a combustion reactionusing someor all of thesubstances from the table below.

C3H8 CO2

O2 H2

C H2O

Page 21: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

349

Chemistry Session 2

Mark your answers to multiple-choice questions 34 through 43 in the spaces provided in your Student Answer Booklet. Do not write your answers in this test booklet, but you may work out solutions to multiple-choice questions in the test booklet.

ID:275928 A Common EQ

 ●34 Whichof the following statementsexplainswhy thehumanbodyproduceschemical buffers?

A. Buffersmaintain a constant pH in theblood.

B. Buffers dissolve salts andminerals in theblood.

C. Buffers decompose foodmoleculesduringdigestion.

D. Buffers catalyze chemical reactionsin thebody cells.

ID:258935 B Common EQ

 ●35 A6.0M solutionofHCl is diluted to1.0M.Howmanymillilitersof the6.0Msolutionwouldbeused to prepare 100.0mLof thediluted1.0M solution?

A. 6mL

B. 17mL

C. 33mL

D. 100mL

ID:251804 B Common EQ

 ●36 After crudeoil is pumpedout of theground, itmust beprocessed in a“cracking tower.”The tower separates it into lessdensechemicals likebutaneandgasoline, andmoredense chemicals likediesel fuel and tar.

Basedon this information, crudeoil canbest be classified as a

A. pure compound.

B. mixture of compounds.

C. mixture of pure elements.

D. solutionof plasma and liquid.

Page 22: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 2

ID:229652 A Common EQ

 ●37 Whena cupof hot chocolate cools from90°C to80°C,whichof the followingis happening to themolecules of theliquid?

A. Their rate ofmotion is decreasing.

B. Their valence electrons are being lost.

C. Their positions are becomingfixed in crystals.

D. Their averagedistance fromadjacentmolecules is increasing.

ID:275857 C Common EQ

 ●38 A reactionyields 6.26gof a product.What is thepercent yield if thetheoretical yield is 18.81g?

A. 3.00%B. 10.6%C. 33.3%D. 56.1%

ID:274061 B Common EQ

 ●39 The table belowprovides someinformation about anunidentifiedelement.

Physical Properties:

• shiny silver-colored solid

• easilyflattenedwith small hammer

• denser thanwater

• has4valence electrons

Chemical Properties:

• doesnot reactwith sodium

• reacts slowlywithoxygen

Basedon this information, theunidentified element isbest classifiedaswhichof the following?

A. ametal in group1 (1A)

B. ametal in group14 (4A)

C. a nonmetal in period4

D. ametalloid in period5

Page 23: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 2

ID:281286 A Common EQ

 ●40 Whichof the following statementsdescribes a gamma ray?

A. Agamma rayhas nomass.

B. Agamma rayhas a positive charge.

C. Agamma ray canbe stoppedby asheet of paper.

D. Agamma ray canbe converted intoa beta particle.

ID:246822 B Common EQ

 ●41 The table below shows theelectronegativities of four elements.

Element Electronegativity

carbon 2.6

fluorine 4.0

hydrogen 2.2

oxygen 3.4

Whichof the followingbonds is themost polar?

A. carbon–hydrogen

B. carbon–fluorine

C. fluorine–fluorine

D. hydrogen–oxygen

Page 24: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

352

Chemistry Session 2

ID:208301 208301_saltflask.eps A Common EQ

 ●42 Thediagrambelow shows a cubeofsodiumchloridebeginning to dissolve inwater.

Erlenmeyer flask

Cube of NaClWaterat 20°C

Whichof the following changeswillcause the cube todissolvemorequickly?

A. swirling theflask

B. removing the stopper

C. pouringoff half thewater

D. decreasing thewater temperature

ID:273212 C Common EQ

 ●43 Whena scubadiver is deepunderwaterand exhales, air bubbles formand riseto the surfaceof thewater.Whichof thefollowing statementsbest describeswhathappens to the air bubbles as they riseto the surface?

A. Thenumberofmolecules in thebubbles increases, and thediameterof thebubbles increases.

B. Thenumberofmolecules in thebubbles decreases, and the diameterof thebubbles decreases.

C. Thenumberofmolecules in thebubbles remains the same, and thediameter of thebubbles increases.

D. Thenumberofmolecules in thebubbles remains the same, and thediameter of thebubbles decreases.

Page 25: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 2

Questions 44 and 45 are open-response questions.

• BE SURE TO ANSWER AND LABEL ALL PARTS OF EACH QUESTION.• Show all your work (diagrams, tables, or computations) in your Student Answer Booklet.• If you do the work in your head, explain in writing how you did the work.

Write your answer to question 44 in the space provided in your Student Answer Booklet.

ID:281306 Common EQ

 ●44 The elements helium,neon, andxenon are located in group18 (8A) in theperiodic table.

a. Explainwhy the atomicnumber increases fromhelium toneon to xenon.

b. Explainwhyhelium,neon, andxenon are located in different periods in theperiodic table.

c. Describe the chemical reactivity of helium,neon, andxenonand explainhow the locationof these elements in theperiodic table relates to their chemical reactivity.

Page 26: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

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Chemistry Session 2

Write your answer to question 45 in the space provided in your Student Answer Booklet.

ID:287607 Common EQ

 ●45 Glucose (C6H12O6) is formed in plants by theprocess of photosynthesis.Thenet equation forphotosynthesis is shownbelow.

6 2 2 6 12 6 2CO 6H O H O Osunlight

C 6

a. Calculate themolarmass of glucose.Showyour calculations and includeunits in your answer.

b. Explainhow the amount of carbondioxide consumedby a plant canbedetermined frommeasuring the amount of oxygen releasedby theplant.Assumeexcesswater is available.

c. Calculate the amount of glucose, in grams, formedwhen100mol ofO2 is released.Showyour calculations and includeunits in your answer.

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Common Polyatomic Ions

Ion Ionic Formula

Ammonium NH41

Carbonate CO32-

Hydroxide OH-

Nitrate NO3-

Phosphate PO43-

Sulfate SO42-

Combined Gas Law: P V

T

P V

T1 1

1

2 2

2

5

Ideal Gas Law: PV nRT5

Dilution Formula: M1V15M2V2

Molar Volume of Ideal Gas at STP: 22.4L/mol

Ideal Gas Constant: R 5 0.0821L• atm/mol• K 58.31L• kPa/mol• K

STP: 1atm(101.3kPa),273K(0°C)

Absolute Temperature Conversion: K 5 °C1 273

Definition of pH: pH5log[H3O1]5log[H1]

Avogadro’s Number: 6.0231023particles/mol

Nuclear Symbols

Name Symbol

Alpha particle or 24 He

Beta particle bor−10e

Gamma ray

Neutron 01n

Massachusetts Comprehensive Assessment SystemChemistry Formula and Constants Sheet

Page 28: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

Mas

sach

use

tts

Com

pre

hen

sive

Ass

essm

ent

Sys

tem

6.94

Li 3Li

thiu

m

1.01

H 1H

ydro

gen

9.01

Be 4

Ber

ylliu

m

2A 23A 13

4A 145A 15

6A 167A 17

3B 34B 4

5B 56B 6

7B 7

8B

89

101B 11

2B 12

22.9

9 Na

11S

odiu

m

24.3

1 Mg

12M

agne

sium

39.1

0 K 19P

otas

sium

40.0

8 Ca

20C

alci

um85

.47 Rb

37R

ubid

ium

87.6

2 Sr

38S

tron

tium

132.

91 Cs

55C

esiu

m

137.

33 Ba

56B

ariu

m(2

23) Fr 87

Fran

cium

(226

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88R

adiu

m

44.9

6 Sc

21S

cand

ium

47.8

8 Ti

22T

itani

um88

.91 Y 39

Yttr

ium

91.2

2 Zr

40Z

ircon

ium

138.

91 La 57La

ntha

num

178.

49 Hf

72H

afni

um

(227

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89A

ctin

ium

(267

) Rf

104

Rut

herf

ordi

um

50.9

4 V 23V

anad

ium

52.0

0 Cr

24C

hrom

ium

92.9

1 Nb

41N

iobi

um

95.9

4 Mo

42M

olyb

denu

m18

0.95 Ta 73

Tant

alum

183.

85 W 74Tu

ngst

en(2

68) Db

105

Dub

nium

(271

) Sg

106

Sea

borg

ium

54.9

4 Mn

25M

anga

nese

55.8

5 Fe 26 Iron

(98)

Tc

43Te

chne

tium

101.

07 Ru

44R

uthe

nium

186.

21 Re

75R

heni

um

190.

23 Os

76O

smiu

m(2

72) Bh

107

Boh

rium

(277

) Hs

108

Has

sium

58.9

3 Co

27C

obal

t

58.6

9 Ni

28N

icke

l10

2.91 Rh

45R

hodi

um

106.

42 Pd

46P

alla

dium

192.

22 Ir 77Ir

idiu

m

195.

08 Pt

78P

latin

um(2

76) M

t10

9M

eitn

eriu

m

(281

)

63.5

5 Cu

29C

oppe

r

65.3

9 Zn

30 Zin

c10

7.87 Ag

47S

ilver

112.

41 Cd

48C

adm

ium

196.

97 Au 79 G

old

200.

59 Hg

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ry

10.8

1 B 5B

oron

12.0

1 C 6C

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n26

.98 A

l13

Alu

min

um

28.0

9 Si

14S

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n69

.72 Ga

31G

alliu

m

72.5

9 Ge

32G

erm

aniu

m11

4.82 In 49

Indi

um

118.

71 Sn

50 Tin

204.

38 Tl

81T

halli

um

207.

2 Pb

82 Lead

14.0

1 N 7N

itrog

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16.0

0 O 8O

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.97 P 15

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spho

rus

32.0

6 S 16S

ulfu

r74

.92 As

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rsen

ic

78.9

6 Se

34S

elen

ium

121.

75 Sb

51A

ntim

ony

127.

60 Te 52Te

lluriu

m20

8.98 B

i83

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mut

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0 F 9F

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20.1

8 Ne

10N

eon

35.4

5 Cl

17C

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39.9

5 Ar

18A

rgon

79.9

0 Br

35B

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83.8

0 Kr

36K

rypt

on12

6.91 I 53

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ne

131.

29 Xe

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1

110

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12 Ce

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rase

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232.

04 Th

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m

231.

04 Pa 91

Pro

tact

iniu

m

144.

24 Nd

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miu

m

(145

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Pro

met

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(237

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150.

36 Sm 62

Sam

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151.

96 Eu

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(243

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Am

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157.

25 Gd

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m

158.

93 Tb

65Te

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ium

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lium

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66D

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164.

93 Ho

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(251

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m

(252

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inst

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um

167.

26 Er

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m

168.

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lium

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100

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101

Men

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04 Yb

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m

174.

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356

Page 29: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

357

High School Chemistry Spring 2012 Released Items:

Reporting Categories, Standards, and Correct Answers*

Item No. Page No. Reporting Category StandardCorrect Answer

(MC)*

1 331 Properties of Matter and Thermochemistry 6.4 A

2 331 Atomic Structure and Periodicity 2.2 A

3 332 Solutions, Equilibrium and Acid Base Theory 7.4 D

4 333 Bonding and Reactions 5.1 C

5 333 Atomic Structure and Periodicity 2.2 C

6 334 Properties of Matter and Thermochemistry 1.1 A

7 335 Properties of Matter and Thermochemistry 6.1 D

8 335 Atomic Structure and Periodicity 2.4 B

9 335 Solutions, Equilibrium and Acid Base Theory 7.5 D

10 335 Solutions, Equilibrium and Acid Base Theory 8.1 B

11 336 Solutions, Equilibrium and Acid Base Theory 8.2

12 337 Properties of Matter and Thermochemistry 6.3 B

13 337 Bonding and Reactions 4.2 A

14 338 Atomic Structure and Periodicity 2.7 A

15 338 Bonding and Reactions 8.4 A

16 339 Solutions, Equilibrium and Acid Base Theory 7.6 D

17 340 Bonding and Reactions 4.4 C

18 340 Atomic Structure and Periodicity 3.3 D

19 341 Bonding and Reactions 4.5 B

20 341 Atomic Structure and Periodicity 3.4 A

21 342 Atomic Structure and Periodicity 2.3 B

22 342 Properties of Matter and Thermochemistry 1.3 B

23 343 Properties of Matter and Thermochemistry 1.1

24 344 Atomic Structure and Periodicity 2.6 C

25 344 Atomic Structure and Periodicity 2.1 A

26 344 Bonding and Reactions 4.6 D

27 345 Properties of Matter and Thermochemistry 6.2 C

28 346 Properties of Matter and Thermochemistry 6.2 A

29 347 Bonding and Reactions 4.1 D

30 347 Solutions, Equilibrium and Acid Base Theory 7.1 B

31 347 Bonding and Reactions 5.5 D

32 347 Properties of Matter and Thermochemistry 6.5 B

33 348 Bonding and Reactions 5.2

34 349 Solutions, Equilibrium and Acid Base Theory 8.3 A

35 349 Solutions, Equilibrium and Acid Base Theory 7.2 B

36 349 Properties of Matter and Thermochemistry 1.2 B

37 350 Properties of Matter and Thermochemistry 6.3 A

38 350 Bonding and Reactions 5.6 C

39 350 Atomic Structure and Periodicity 3.2 B

40 351 Atomic Structure and Periodicity 2.5 A

Page 30: XIX. Chemistry, High School - doe.mass.edu · High School Chemistry Test The spring 2012 high school Chemistry test was based on learning standards in the Chemistry content

358

Item No. Page No. Reporting Category StandardCorrect Answer

(MC)*

41 351 Bonding and Reactions 4.3 B

42 352 Solutions, Equilibrium and Acid Base Theory 7.3 A

43 352 Properties of Matter and Thermochemistry 6.1 C

44 353 Atomic Structure and Periodicity 3.1

45 354 Bonding and Reactions 5.3

*Answersareprovidedhereformultiple-choiceitemsonly.Sampleresponsesandscoringguidelinesforopen-responseitems,whichareindicatedbyshadedcells,willbepostedtotheDepartment’swebsitelaterthisyear.