Up1 kimia ting 5 (2018)

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SEKOLAH MENENGAH KEBANGSAAN SULTAN YUSSUF BATU GAJAH, PERAK

UJIAN PENGESANAN 1

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CHEMISTRY Form 5 Mac 2 jam

Dua jam

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU 1. Tulis nama dan kelas pada ruangan yang disediakan.

2. Kertas soalan dwibahasa.

ini

adalah

Untuk Kegunaan Pemeriksa Kod Pemeriksa:

dalam Bahagian

Markah Penuh

3. Soalan dalam bahasa Inggeris mendahului soalan yang sepadan dalam bahasa Melayu.

A

15

B

30

4. Calon dibenarkan menjawab keseluruhan atau sebahagian soalan sama ada dalam bahasa Inggeris atau bahasa Melayu.

C

10

Jumlah

55

Markah Diperoleh

5. Jawab semua soalan 6. Tulis jawapan Bahagian A dalam ruang yang disediakan pada muka surat 9, Bahagian B di ruang yang disediakan dan Bahagian C di dalam testpad.

7. Ikat kertas graf yang digunakan di bahagian belakang kertas soalan ini. Tulis nama dan kelas pada kertas graf tersebut.

Kertas soalan ini mengandungi 17 halaman bercetak

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SECTION A / BAHAGIAN A [15 marks] / [15 markah]

1

Which of the following has the highest rate of reaction?

Antara berikut, yang manakah mempunyai kadar tindak balas paling tinggi?

A B C D

2

Rusting of water pipe Pengaratan paip air Photosynthesis in green plant Fotosintesis dalam tumbuhan hijau Burning of small piece of charcoal in the air Pembakaran ketulan kecil arang batu di udara Formation of stalactites and stalagmites in caves Pembentukan stalaktit dan stalakmit dalam gua

The following equation represents the reaction between calcium carbonate, CaCO 3 and hydrochloric acid, HCl. Persamaan kimia berikut menunjukkan tindak balas antara kalsium karbonat, CaCO3 dan asid hidroklorik, HCl.

CaCO3 + 2HCl ďƒ CaCl2 + CO2 + H2O Which changes can be used to determine the rate of reaction?

Perubahan manakah ynag boleh digunakan untuk menentukan kadar tindak balas?

I II III IV

Mass of calcium carbonate per unit time Jisim kalsium karbonat per unit masa Volume of carbon dioxide per unit time Isi padu gas karbon dioksida per unit masa Colour of the solution per unit time Warna larutan per unit masa Mass of precipitate produced per unit time Jisim mendakan yang dihasilkan per unit masa

A I and II I dan II

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B I and III I dan III

C II and IV II dan IV

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D III and IV III dan IV

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Table 1 shows the volume of carbon dioxide gas released at half minutes intervals when hydrochloric acid reacts with marble chips.

Jadual 1 menunjukkan isi padu gas karbon dioksida terbebas bagi setiap setengah minit apabila asid hidroklorik bertindak balas dengan ketulan marmar.

Time (min) Masa (min) Volume of CO2 (cm3) Isi padu CO2 (cm3)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

0

170

260

305

340

350

350

Table / Jadual 1

What is the average rate of reaction in the second minute?

Apakah kadar tindak balas purata dalam minit kedua?

A 80.0 cm3 min-1 C 220.0 cm3 min-1 4

B 170.0 cm3 min-1 D 340.0 cm3 min-1

Table 2 shows the condition of reactants used in Experiment I and Experiment II. Jadual 2 menunjukkan keadaan bahan tindak balas yang digunakan dalam Eksperimen I dan Eksperimen II. Experiment Eksperimen

Condition of reactants Keadaan bahan tindak balas

I

Excess zinc granules + 50 cm3 of 2.0 mol dm-3 hydrochloric acid Ketulan zink berlebihan + 50 cm3 asid hidroklorik 2.0 mol dm-3

II

Excess zinc powder + 50 cm3 of 2.0 mol dm-3 hydrochloric acid Serbuk zink berlebihan + 50 cm3 asid hidroklorik 2.0 mol dm-3 Table / Jadual 2

Which graph shows the correct curve for Experiment I and Experiment II? Graf manakah yang menunjukkan lengkung yang betul bagi Eksperimen I dan Eksperimen II?

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The following equation represents a chemical reaction.

Persamaan berikut mewakili suatu tindak balas kimia.

Na2S2O3 + 2HCl ďƒ 2NaCl + H2O + SO2 + S Which graph shows the correct change in the concentration of reactant used in excess against time?

Graf manakah yang betul menunjukkan perubahan kepekatan bahan tindak balas yang digunakan secara berlebihan melawan masa?

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The decomposition of 25 cm3 of 0.1 mol dm-3 hydrogen peroxide solution produces oxygen gas, as in curve P. Penguraian 25 cm3 hidrogen peroksida 0.1 mol dm-3 menghasilkan gas oksigen, seperti dalam lengkung P.

If the experiment is repeated, which solution will produce curve Q? Jika eksperimen itu diulangi, larutan manakah menghasilkan lengkung Q? A B C D 7

25 cm3 of 0.15 mol dm-3 hydrogen peroxide 25 cm3 hidrogen peroksida 0.15 mol dm-3 20 cm3 of 0.15 mol dm-3 hydrogen peroxide 20 cm3 hidrogen peroksida 0.15 mol dm-3 17 cm3 of 0.15 mol dm-3 hydrogen peroxide 17 cm3 hidrogen peroksida 0.15 mol dm-3 15 cm3 of 0.15 mol dm-3 hydrogen peroxide 15 cm3 hidrogen peroksida 0.15 mol dm-3

What is the meaning of saturated hydrocarbons?

Apakah maksud hidrokarbon tepu?

A B

C

D

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Compounds containing only hydrogen atoms and carbon atoms Sebatian yang mengandungi atom hidrogen dan atom karbon sahaja Compounds containing hydrogen atoms and carbon atoms with only single bonds Sebatian yang mengandungi atom hidrogen dan atom karbon sahaja dengan hanya ikatan tunggal Compounds containing hydrogen atoms and carbon atoms with one double bond Sebatian yang mengandungi atom hidrogen dan atom karbon sahaja dengan satu ikatan ganda dua Compounds containing hydrogen atoms and carbon atoms with one triple bond Sebatian yang mengandungi atom hidrogen dan atom karbon sahaja dengan satu ikatan ganda tiga

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Which compound is a saturated hydrocarbon?

Sebatian manakah adalah suatu hidrokarbon tepu?

A C

9

7

Propane Propana Propene Propena

B D

Propanol Propanol Chloropropane Kloropropana

Which compound is an unsaturated hydrocarbon?

Sebatian manakah adalah suatu hidrokarbon tak tepu?

A CH3CHCH3CH3 B CH3CH2CH2CH3 C CH3CHCH2CH2CH3 D CH3CH2CH2CH2CH3

10 What is the general formula of alkane?

Apakah formula am bagi alkana?

A C

CnH2n where n = 0, 1, 2…

CnH2n di mana n = 0, 1, 2…

CnH2n+2 where n = 0, 1, 2…

CnH2n+2 di mana n = 0, 1, 2…

B D

CnH2n where n = 1, 2, 3…

CnH2n di mana n = 1, 2, 3…

CnH2n+2 where n = 1, 2, 3…

CnH2n+2 di mana n = 1, 2, 3…

11 Diagram 1 shows the structural formulae of two carbon compounds.

Rajah 1 menunjukkan formula molekul bagi dua sebatian karbon.

Diagram / Rajah 1

Which property is similar in both compounds?

Sifat apakah yang sama bagi kedua-dua sebatian?

A C

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Melting point Takat lebur Solubility Keterlarutan

B D

Molar mass Jisim molar Density Ketumpatan

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12 What are the products formed when butane is burnt in excess oxygen?

Apakah hasil yang terbentuk apabila butana terbakar dalam oksigen berlebihan?

I III

Water Air Carbon dioxide Carbon dioksida

A I and II I dan II

B I and III I dan III

II IV

Carbon Karbon Carbon monoxide Carbon monoksida

C II and IV II dan IV

D III and IV III dan IV

13 Cyclohexane, C6H12 is an organic solvent. Which substance is soluble in cyclohexane?

Sikloheksana, C6H12 ialah pelarut organik. Bahan manakah yang larut dalam sikloheksana?

A C

Limestone Batu kapur Sodium sulphate Natrium sulfat

B D

Naphthalene Naftalena Aluminium oxide Aluminium oksida

14 Which statement is correct about alkanes?

Pernyataan manakah betul tentang alkane?

A B C D

Undergo polymerization reaction Mengalami tindak balas pempolimeran Undergo substitution reaction Mengalami tindak balas penukargantian Undergo hydrogenation reaction Mengalami tindak balas penghidrogenan Undergo hydration reaction Mengalami tindak balas penghidratan

15 What are the products formed when butene is burned in the air?

Apakah hasil yang terbentuk apabila butena dibakar dalam udara?

A C

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Ethane and water Etana dan air Carbon dioxide and water Karbon dioksida dan air

B D

Carbon and hydrogen Carbon dan hidrogen Carbon dioxide and hydrogen Karbon dioksida dan hidrogen

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For Examiner’s Use

ANSWERS FOR SECTION A JAWAPAN BAHAGIAN A

1.

6.

11.

2.

7.

12.

3.

8.

13.

4.

9.

14.

5.

10.

15.

A 15

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For Examiner’s Use

SULIT

10

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SECTION B / BAHAGIAN B [30 marks] / [30 markah]

1

Table 1 shows the information for two sets of experiment to investigate one factor affecting the rate of reaction between zinc and sulphuric acid.

Jadual 1 menunjukkan maklumat bagi dua set eksperimen untuk menyiasat satu faktor yang mempengaruhi kadar tindak balas antara zink dan asid sulfurik.

Material Bahan

Set

Volume of gas collected in 2 minutes (cm3) Isi padu gas terkumpul dalam 2 minit (cm3)

I

50 cm3 of 1.0 mol dm-3 sulphuric acid + excess zinc 50 cm3 asid sulfurik 1.0 mol dm-3 + zink berlebihan

30.00

II

50 cm3 of 1.0 mol dm-3 sulphuric acid + excess zinc + catalyst X 50 cm3 asid sulfurik 1.0 mol dm-3 + zink berlebihan + mangkin X

50.00

Table / Jadual 1

Based on Table 1, Berdasarkan Jadual 1, (a) 1(a)

what is the meaning of catalyst? apakah maksud mangkin? ……………………………………………………………………………………..

1

……………………………………………………………………………………..

[1 mark / markah]

(b)

1(b) 1

state the name of catalyst X that can be used in Set II. namakan mangkin X yang boleh digunakan dalam Set II. ……………………………………………………………………………………..

[1 mark / markah]

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SULIT (c)

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(i) calculate the average rate of reaction in hitung kadar tindak balas purat dalam Set I: Set I:

For Examiner’s Use

Set II: Set II:

1(c)(i) 2 [2 marks / markah]

1(c)(ii)

(ii) compare the rate of reaction between Set I and Set II. bandingkan kadar tindak balas antara Set I dan Set II. ………………………………………………………………………………...

1

[1 mark / markah]

(iii) explain your answer in 1(c)(ii) based on collision theory. terangkan jawapan anda di 1(c)(ii) berdasarkan teori perlanggaran. ………………………………………………………………………………... ………………………………………………………………………………... ………………………………………………………………………………...

[2 marks / markah]

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1(c)(iii) 2

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SULIT (d)

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The energy profile diagram for the reaction between zinc and sulphuric acid for both sets of experiment are shown in Diagram 5.

Rajah profil tenaga antara zink dan asid sulfurik bagi kedua-dua set eksperimen itu ditunjukkan dalam Rajah 5.

Diagram / Rajah 5

1(d)(i)

(i) Label the curves for Set I and Set II in Diagram 5.

Label lengkung bagi Set I dan Set II dalam Rajah 5.

1

[1 mark / markah]

(ii) Show and label the activation energy for Set I as E 1 and Set II as EII in Diagram 1.

Tunjuk dan label tenaga pengaktifan bagi Set I sebagai EI dan Set II sebagai EII dalam Rajah 1.

1(d)(ii) 2

[2 marks / markah]

B1 10

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2 Three experiments were carried out to investigate the factor affecting rate of reaction.

Table 2 shows the reactants and conditions of reaction involved.

Tiga eksperimen dijalankan untuk mengkaji faktor yang mempengaruhi kadar tindak balas. Jadual 2 menunjukkan bahan tindak balas dan keadaan tindak balas yang terlibat.

Set Set I

II

III

Reactants Bahan tindak balas 50 cm3 of 0.5 mol dm-3 sulphuric Excess zinc acid Zink berlebihan 3 50 cm asid sulfurik 0.5 mol dm-3 50 cm3 of 0.5 mol dm-3 sulphuric Excess zinc acid Zink berlebihan 50 cm3 asid sulfurik 0.5 mol dm-3 50 cm3 of 1.0 mol dm-3 sulphuric Excess zinc acid Zink berlebihan 3 50 cm asid sulfurik 1.0 mol dm-3

For Examiner’s Use

Condition of reaction Keadaan tindak balas Room temperature Suhu bilik 60°C

60°C

Table / Jadual 2

(a)

Compare the rate of reaction between Set I and Set II. Explain your answer based on collision theory.

Bandingkan kadar tindak balas Set I dan Set II. Terangkan jawapan anda berdasarkan teori perlanggaran. .................................................................................................................................. .................................................................................................................................. ..................................................................................................................................

2(a) .................................................................................................................................. ..................................................................................................................................

[5 marks / markah]

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For Examiner’s Use

SULIT (b)

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Compare the rate of reaction between Set II and Set III. Explain your answer based on collision theory.

Bandingkan kadar tindak balas Set II dan Set III. Terangkan jawapan anda berdasarkan teori perlanggaran. .................................................................................................................................. .................................................................................................................................. ..................................................................................................................................

2(b) ..................................................................................................................................

5

..................................................................................................................................

[5 marks / markah]

(c)

Sketch a graph of volume of hydrogen gas released against time for Set I, II and III on the same axes.

Lakar graf isi padu gas hidrogen yang terbebas melawan masa bagi Set I, II dan III pada paksi yang sama.

2(c) 5 [5 marks / markah]

B2 15

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Table 3 shows the molecular formulae and boiling points of three compounds.

Jadual 3 menunjukkan formula molekul dan takat didih tiga sebatian.

Compound Sebatian

Molecular formula Formula molekul

Boiling point (°C) Takat didih (°C)

P

C2H4

-103

Q

C3H6

-48

R

C4H8

-6

For Examiner’s Use

Table / Jadual 3

(a)

Name the homologous series of these compounds.

Namakan siri homolog bagi sebatian-sebatian ini.

3(a) 1

………………………………………………………………………………..........

[1 mark / markah]

(b)

Write the general formula for this homologous series.

Tuliskan formula am bagi siri homolog ini.

3(b) 1

………………………………………………………………………………..........

[1 mark / markah]

(c)

Explain why the boiling points for the members of this homologous series increases when the number of carbon atoms per molecule increases.

Terangkan mengapa takat didih bagi ahli-ahli dalam siri homolog ini meningkat apabila bilangan atom karbon per molekul meningkat. ……………………………………………………………………………….......... ……………………………………………………………………………….......... ……………………………………………………………………………….......... ………………………………………………………………………………..........

3(c) 3

………………………………………………………………………………..........

[3 marks / markah]

B3 5

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SECTION C / BAHAGIAN C [10 marks] / [10 markah]

1

The graph in Diagram 6 shows the curves of Experiment I and Experiment II that was carried out to study the rate of reaction.

Graf dalam Rajah 6 menunjukkan lengkung bagi Eksperimen I dan Eksperimen II yang dijalankan untuk mengkaji kadar tindak balas.

Diagram / Rajah 6

The curve in Experiment I is obtained from the reaction between 5 g granulated calcium carbonate and 50 cm3 of 1.0 mol dm-3 hydrochloric acid. The experiment is repeated to obtain the curve in Experiment II. Other than temperature, suggest one factor that can change the curve in Experiment I to the curve in Experiment II. Based on the suggested factor, describe one experiment to show how you manipulate the factor in order to obtain the curve in Experiment II. In your description, include a labelled diagram.

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Lengkung dalam Eksperimen I diperoleh daripada tindak balas antara 5 g ketulan kalsium karbonat dan 50 cm3 asid hidroklorik 1.0 mol dm-3. Eksperimen itu diulangi untuk mendapatkan lengkung bagi Eksperimen II. Selain daripada suhu, cadangakn satu faktor yang boleh mengubah lengkung Eksperimen I kepada lengkung Eksperimen II. Berdasarkan faktor yang dicadangkan, huraikan satu eksperimen untuk menunjukkan bagaimana anda memanipulasi faktor tersebut bagi mendapatkan lengkung Eksperimen II. Dalam huraian anda, sertakan gambar rajah berlabel.

[10 marks / markah]

END OF QUESTION PAPER KERTAS SOALAN TAMAT

Disediakan oleh:

Disemak oleh:

Disahkan oleh:

.........................................................

(CIK INTAN ZAREENA ZAHEDI)

.........................................................

(PN. NURRUL ‘AINNI MD. TENI) Ketua Unit Kimia Ting. 6

.................................................

(PN. NORLIZA MD DERUS) Guru Kanan Sains

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