te mātauranga matū, kaupae 1, 2017...te mātauranga matū 90934m, 2017 mĀ te kaimĀka anake...

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909345

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© Mana Tohu Mātauranga o Aotearoa, 2017. Pūmau te mana. Kia kaua rawa he wāhi o tēnei tuhinga e whakahuatia ki te kore te whakaaetanga tuatahi a te Mana Tohu Mātauranga o Aotearoa.

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Te Mātauranga Matū, Kaupae 1, 201790934M Te whakaatu māramatanga ki ētahi

āhuatanga o te tauhohe matū

9.30 i te ata Rātū 14 Whiringa-ā-rangi 2017 Whiwhinga: Whā

Paetae Kaiaka KairangiTe whakaatu māramatanga ki ngā āhuatanga o ētahi tauhohe matū.

Te whakaatu māramatanga hōhonu ki ngā āhuatanga o ētahi tauhohe matū.

Te whakaatu māramatanga matawhānui ki ngā āhuatanga o ētahi tauhohe matū.

Tirohia mēnā e rite ana te Tau Ākonga ā-Motu (NSN) kei runga i tō puka whakauru ki te tau kei runga i tēnei whārangi.

Me whakamātau koe i ngā tūmahi KATOA kei roto i tēnei pukapuka.

He taka pūmotu me ētahi atu rauemi tautoko kei te Pukapuka Rauemi L1–CHEMMR.

Mēnā ka hiahia whārangi atu anō mō ō tuhinga, whakamahia ngā whārangi wātea kei muri o tēnei pukapuka, ka āta tohu ai i ngā tau tūmahi.

Tirohia mēnā e tika ana te raupapatanga o ngā whārangi 2 – 19 kei roto i tēnei pukapuka, ka mutu, kāore tētahi o aua whārangi i te takoto kau.

HOATU TE PUKAPUKA NEI KI TE KAIWHAKAHAERE HEI TE MUTUNGA O TE WHAKAMĀTAUTAU.

Te Mātauranga Matū 90934M, 2017

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TŪMAHI TUATAHI

(a) (i) Whakaotiatetūtohiiraroneiheiwhakaatuitemomotauhohengamatūkaputa.

Tauhohenga Tauhohenga Matū Te momo tauhohenga matū ka puta1 Katukunahewāhanga

konuporakitemurakikorangiotemuratahi.

2 Karauahemehangahaitoranaōkai-ruakiteipuipumetētahipaurakonupangohāora-ruaitinoa.

3 Kawhakawerahiahepaurakonukōhatupākawawaroitinoakirotoitētahiipuipunui.

4 Karauahemehangakonuteapākawapungataraitikiteipuipumetetāpiriitētahiwāhangamāotekonumohe.

(ii) He aha ka kitea i te Tauhohenga 1meteTauhohenga 2?

Tūhonohonotiangākitengakingāmomoekiteaanairototetauhohenga.

Tauhohenga 1:

Tauhohenga 2:

(iii) TuhiahewhāritekupumōteTauhohenga 3kitetapawhāiraronei.

TewhāritekupumōteTauhohenga 3:

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QUESTION ONE

(a) (i) Completethetablebelowtoshowthetypeofchemicalreactionoccurring.

Reaction Chemical Reaction Type of chemical reaction occurring1 Apieceofmagnesiummetal

isheldinablueBunsenburnerflame.

2 Somehydrogenperoxidesolutionisplacedinatesttubewithasmallamountofmanganesedioxidepowder.

3 Asmallamountoflithiumcarbonatepowderisheatedinaboilingtube.

4 Asmallvolumeofzincsulfatesolutionisplacedintoatesttubeandacleanpieceofaluminiummetaladded.

(ii) WhatwouldbeobservedduringReaction 1andReaction 2?

Linktheobservationstospeciesinvolved.

Reaction 1:

Reaction 2:

(iii) WriteawordequationforReaction 3intheboxbelow.

WordequationforReaction 3:

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Chemistry 90934, 2017

ASSESSOR’S USE ONLY


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(iv) WhakaotihiatewhāritetohumōteTauhohenga 4kitetapawhāiraronei.

WhāritetohutauritemōteTauhohenga 4:

ZnSO4 + Al →

(b) Kataeangāpūhuihoutehangairotoingātauhohengamatū.

Whakatauriteangātikangakataeatewhakamahiheiwhakariteingātīpakongarinopungatara,pungatarahāora-ruametekonukuraōkai.

Itōtuhinga,mōtewhakariteiiapūhui,me:

• tautohutemomotauhohengakeiteputa

• whakaahuangākitengakakitea,metetūhonoiēneikingāpūmatūhohemengāhua

• tuhingāwhāritetohutaurite.

Ngāwhāritetohutaurite:

He wāhi anō mō tō tuhinga mō tēnei tūmahi kei te whārangi 6.

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(iv) CompletethesymbolequationforReaction 4intheboxbelow.

BalancedsymbolequationforReaction 4:

ZnSO4 + Al →

(b) Newcompoundscanbeformedduringchemicalreactions.

Compareandcontrastthemethodsthatcouldbeusedtopreparesamplesofironsulfide,sulfurdioxideandcopperoxide.

Inyouranswer,forthepreparationofeachcompound,youshould:

• identifythetypeofreactionoccurring

• describeanyobservationsthatwouldbeseen,andlinkthesetothereactantsandproducts

• writebalancedsymbolequations.

Balancedsymbolequations:

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There is more space for your answer to this question on page 7.


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ANAKE

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MĀ TE KAIMĀKA

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TŪMAHI TUARUA

(a) Katauhohetekonuteakitekonumatāpākawaotairotoitētahitauhohengapei.Katauhoheanōtemehangakonuteapūhaumāotakitekonumatāpākawaota;engarieharatēneiitetauhohengapei.

(i) Whakaotihiangāwhāritekupuiraromōēneitauhohengaerua.

konutea+konumatāpākawaota→

konuteapūhaumāota+konumatāpākawaota→

(ii) Whakamāramahiatetakekāoreewhakarōpūtiatetauhohengaiwaengaitekonuteapūhaumāotametekonumatāpākawaotaitetauhohengapei,engarihetauhohengapeitetauhohengaiwaengaitekonuteametekonumatāpākawaota.

Itōtuhinga,metautohuheahatemomotauhohengaeputaanaiwaengaitekonuteapūhaumāotametekonumatāpākawaota.

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QUESTION TWO

(a) Zincmetalreactswithleadnitrateinadisplacementreaction.Zincchloridesolutionalsoreactswithleadnitrate;however,thisisnotadisplacementreaction.

(i) Completethewordequationsbelowforthesetworeactions.

zinc+leadnitrate→

zincchloride+leadnitrate→

(ii) Explainwhythereactionbetweenzincchlorideandleadnitrateisnotclassifiedasadisplacementreaction,butthereactionbetweenzincmetalandleadnitrateis.

Inyouranswer,youshouldidentifywhattypeofreactionisoccurringbetweenzincchlorideandleadnitrate.

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(b) Kataeangākonganukutewhakaurukitētahiraupapatangahoheeaikingātauhohengaiwaengaingākonganukumengāmehanga.EwhakaatuanatetūtohiiraroingāhuaoteraukonganukuA,B,meCkingāmehangapākawapungatarakonganuku.

Mehanga KonganukuA KonganukuB KonganukuCKonganukuA pākawa pungatara

Kāorehetauhohenga

Kāorehetauhohenga

KonganukuB pākawa pungatara

KapeiiaB KapeiiaB

KonganukuC pākawa pungatara

KapeiiaC Kāorehetauhohenga

TātarihiangākitengaheiwhakariteiteraupapaotekahahoheongākonganukuetoruA,B,me C.

Parauhautiatōtuhingamātehonoingākitengakitōmōhiokingātauhohengapei.

EHARA i te mea me tautohu koe i ia konganuku.

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(b) Metalscanbeputintoareactivityseriesbasedonthereactionsbetweenmetalsandsolutions. ThetablebelowshowstheresultsofputtingmetalsA,B,andCintometalsulfatesolutions.

Solution MetalA Metal B Metal CMetal A sulfate Noreaction NoreactionMetal B sulfate DisplacesB DisplacesBMetal C sulfate DisplacesC Noreaction

AnalysetheresultstodeterminetheorderofreactivityforthethreemetalsA,B,and C.

Justifyyouranswerbylinkingtheresultstoyourknowledgeofdisplacementreactions.

You do NOT need to identify each metal.

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MĀ TE KAIMĀKA

ANAKE

TŪMAHI TUATORU

(a) (i) Koēheaongāmatūewhaiakekamemehairotoitewai?

Ka āhei koe ki te whakamahi i ngā ture mehamehanga kei roto i te pukapuka rauemi.

Matū Ka memeha i te wai?Āe /Kāo

KonuteapākawawaroKonurehuwaihāKonu-okehupūhaumāota

(ii) Mōiatakiruamehangairaro,metautohumēnākaputahehuatokainaranuangāmehanga.

Whakaingoatiangāhuatokakaputa.

Ngā mehanga e whakaranua ana

Ka huatoka?Āe /Kāo

Ingoa o te huatoka

konutaipākawawaromete konupūmāpūhaumāotakonutaiwaihāmete konurehupākawaota

konutaipākawapungataramete

konumatāpākawaota

(iii) KōwhirihiakiaKOTAHItetakiruaongāmehangamaiitetūtohiirungaakeka huatoka,meteātawhakamāramaitetauhohengakaputa.

Itōtuhinga,me:

• whakaahuangākitengakakitea,metetūhonokingāpūmatūhohemengāhuakeiroto

• whakamāramamaiheahaiwhakarōpūtiaaitetauhohengaheitauhohengahuatokamātekōreromōngākatoteirotoingāmehangaeruametehuatokakaputa.

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QUESTION THREE

(a) (i) Whichofthefollowingsubstancesaresolubleinwater?

You may use the solubility rules provided in the resource booklet.

Substance Soluble in water?Yes / No

ZinccarbonatePotassiumhydroxideBariumchloride

(ii) Foreachofthepairsofsolutionsbelow,identifywhetheraprecipitatewillformwhenthesolutionsaremixed.

Nameanyprecipitatesthatform.

Solution being mixed Precipitate forms?Yes / No

Name of precipitate

sodiumcarbonateand calciumchloride

sodiumhydroxideand potassiumnitratesodiumsulfateand

leadnitrate

(iii) ChooseONEofthepairsofsolutionsfromthetableabovethatforms a precipitate,andelaborateonthereactionoccurring.

Inyouranswer,youshould:

• describeanyobservationsthatwouldbeseen,andlinkthemtothereactantsandproductsinvolved

• explainwhythereactionisclassifiedasaprecipitationreactionbyreferringtotheionsinbothsolutionsandtheprecipitateformed.

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(b) Kuahētetapaingāmehangaetorukuawhaikatotetōraro.

Hekatotepākawapungatarakeirotoitētahimehanga,hekatotepūhaumāotakeitētahi,hekatotekahautawakeitētahiatu.

Emōhiotiaanakāorehekatotetōraroatuanōkeingāmehanga.

Mepēheatewhakamātauingāmehangakiamōhiotiaaikeiēheaongāmehangangākatoteetoru:tepākawapungatara,tepūhaumāotametekahautawa?

Itōtuhinga,me:

• whakaahuahetikangakataeatewhakahaerekitētahitaiwhangapūtaiaokura,mātewhakamahiitekonu-okehupākawaotametehiriwapākawaotaheimehangawhakamātau

• tautohungāhuatokakaputametūhonoiēneikingākitengakataea

• whakamāramahepēheatewhakamahiingākitengaheitautohuingāmehanga

• homaingāwhāritekatotetauritemōngāhuatokaKATOAkaputa.

Ka āhei koe ki te whakamahi i ngā ture mehamehanga kei roto i te pukapuka rauemi.

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(b) Threesolutionscontainingnegativeions/anionshavebeenmislabelled.

Oneofthesolutionscontainssulfateions,oneofthemcontainschlorideions,andonecontainsiodideions.

Itisknownthatthesolutionscontainnoothernegativeions/anions.

Howcouldthesolutionsbetestedtodeterminewhichsolutionscontaineachofthethreeions:sulfate,chloride,andiodide?

Inyouranswer,youshould:

• describeamethodthatcouldbecarriedoutinaschoollaboratory,usingbariumnitrateandsilvernitrateastestsolutions

• identifyanyprecipitatesformedandlinkthesetoanyobservationsthatwouldbemade

• explainhowtheresultscouldbeusedtoidentifythesolutions

• givebalancedionicequationsforALLprecipitatesformed.

You may use the solubility rules provided in the resource booklet.

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ANAKETAU TŪMAHI

He whārangi anō ki te hiahiatia.Tuhia te (ngā) tau tūmahi mēnā e tika ana.

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19



QUESTION NUMBER

Extra paper if required.Write the question number(s) if applicable.

90

93

4M

Level 1 Chemistry, 201790934 Demonstrate understanding of aspects

of chemical reactions

9.30 a.m. Tuesday 14 November 2017 Credits: Four

Achievement Achievement with Merit Achievement with ExcellenceDemonstrate understanding of aspects of chemical reactions.

Demonstrate in-depth understanding of aspects of chemical reactions.

Demonstrate comprehensive understanding of aspects of chemical reactions.

Check that the National Student Number (NSN) on your admission slip is the same as the number at the top of this page.

You should attempt ALL the questions in this booklet.

A periodic table and other reference material are provided in the Resource Booklet L1–CHEMR.

If you need more room for any answer, use the extra space provided at the back of this booklet and clearly number the question.

Check that this booklet has pages 2 – 19 in the correct order and that none of these pages is blank.

YOU MUST HAND THIS BOOKLET TO THE SUPERVISOR AT THE END OF THE EXAMINATION.

te mātauranga matū, kaupae 1, 2017...te mātauranga matū 90934m, 2017 mĀ te kaimĀka anake...

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