PAPER 3 - CHEMISTRY TRIAL SPM (2018)

Page 1

SULIT NAMA: _______________________________________________________ KELAS: ______________________________________________________

SEKOLAH MENENGAH KEBANGSAAN SULTAN YUSSUF BATU GAJAH, PERAK

PEPERIKSAAN PERCUBAAN SPM

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CHEMISTRY Kertas 3 Mei 1 ½ jam

Satu jam tiga puluh minit

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 Soalan

Markah Penuh

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

1

24

2

9

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

3

17

Jumlah

50

Markah Diperoleh

5. Calon dikehendaki membaca maklumat di halaman belakang kertas soalan ini.

Kertas soalan ini mengandungi 10 halaman bercetak

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SULIT 1

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Diagram 1.1 shows an experiment to compare the elasticity of vulcanized rubber and unvulcanized rubber. 15.0 g of weights were hung on 5 cm rubber strips X and Y. The length of each rubber strip was measured after the weights were removed. The experiment was repeated using 30.0 g and 45.0 g of weights. Rajah 1.1 menunjukkan satu experimen untuk membandingkan kekenyalan getah tervulkan dan getah tak tervulkan. Pemberat 15.0 g digantung pada 5 cm jalur getah X dan Y. Panjang setiap jalur getah tersebut diukur selepas pemberat dialihkan. Eksperimen diulangi dengan menggunakan pemberat 30.0 g dan 45.0 g. Before stretching Sebelum regangan

Clip Klip

Clip Klip

Rubber strip Y Jalur getah Y

Rubber strip X Jalur getah X

During stretching Semasa regangan

Diagram / Rajah 1.1

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SULIT

3

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Diagram 1.2 shows the length of rubber strips X before the weights were hung and after the weights were removed. Rajah 1.2 menunjukkan panjang jalur getah X sebelum pemberat digantung dan selepas pemberat dialihkan. Before experiment Sebelum eksperimen Length Panjang : 5.0 cm

After 15.0 g of weight was removed Selepas pemberat 15.0 g dialihkan Length Panjang : 5.0 cm

After 30.0 g of weight was removed Selepas pemberat 30.0 g dialihkan Length Panjang : 5.0 cm

After 45.0 g of weight was removed Selepas pemberat 45.0 g dialihkan Length Panjang : 6.0 cm

Diagram / Rajah 1.2

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SULIT

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Diagram 1.3 shows the length of rubber strips Y before the weights were hung and after the weights were removed. Rajah 1.3 menunjukkan panjang jalur getah Y sebelum pemberat digantung dan selepas pemeberat dialihkan. Before experiment Sebelum eksperimen Length Panjang : 5.0 cm

After 15.0 g of weight was removed Selepas pemberat 15.0 g dialihkan Length Panjang : 5.5 cm

After 30.0 g of weight was removed Selepas pemberat 30.0 g dialihkan Length Panjang : 6.4 cm

After 45.0 g of weight was removed Selepas pemberat 45.0 g dialihkan Length Panjang : 8.5 cm

Diagram / Rajah 1.3

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For Examiner’s Use

SULIT (a)

5

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Based on Diagram 1.1, state the observation for the experiment. Berdasarkan Rajah 1.1, nyatakan pemerhatian bagi eksperimen ini.

1(a) ............................................................................................................................. 3

............................................................................................................................. [3 marks / markah] (b)

1(b) 3

State the inference based on the observation in 1(a). Nyatakan inferens berdasarkan pemerhatian di 1(a). ............................................................................................................................. ............................................................................................................................. [3 marks / markah]

(c)

Based on the experiment, state: Berdasarkan eksperimen, nyatakan: (i) the manipulated variable: pemboleh ubah yang dimanipulasikan ................................................................................................................... (ii)

the responding variable pemboleh ubah bergerak balas ...................................................................................................................

(iii) the fixed variable pemboleh ubah yang dimalarkan

1(c) 3

................................................................................................................... [3 marks / markah] (d)

State the hypothesis for this experiment. Nyatakan hipotesis bagi eksperimen ini. .............................................................................................................................

1(d) ............................................................................................................................. 3

............................................................................................................................. [3 marks / markah]

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SULIT (e)

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What is the relationship between length of rubber strip and the elasticity? Apakah hubungan antara panjang jalur getah dengan kekenyalan?

For Examiner’s Use

............................................................................................................................. 1(e) ............................................................................................................................. 3

............................................................................................................................. [3 marks / markah] (f)

State the operational definition for the elasticity of the rubber strip. Nyatakan definisi secara operasi bagi kekenyalan jalur getah. ............................................................................................................................. 1(f) ............................................................................................................................. 3

............................................................................................................................. [3 marks / markah] (g)

Both rubber strips were left for about 7 days. Rubber strip Y produced a smell but rubber strip X do not produce smell. Explain the observation. Kedua-dua jalur getah ditinggalkan selama 7 hari. Jalur getah Y menghasilkan bau manakala jalur getah X tidak. Terangkan pemerhatian tersebut. ............................................................................................................................. 1(g) ............................................................................................................................. 3

............................................................................................................................. [3 marks / markah] (h)

If the experiment is continued by increasing the mass of weight, the rubber strip will break down. Predict which rubber strip will break down first and state the types of rubber strips X and Y. Jika eksperimen ini diteruskan dengan menambahkan jisim pemberat, jalur getah akan putus. Ramalkan jalur getah manakah akan putus dahulu dan nyatakan jenis jalur getah X dan Y. ............................................................................................................................. ............................................................................................................................. [3 marks / markah]

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1(h) 3 A1 24


For Examiner’s Use

SULIT 2

7

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A student has carried out an experiment to determine the empirical formula of oxide of copper according to the following steps shown in diagram below. Seorang pelajar telah menjalankan satu eksperimen untuk menentukan formula empirik oksida bagi kuprum berdasarkan langkah-langkah yang ditunjukkan dalam rajah di bawah Steps Langkah-langkah

Apparatus set-up Susunan radas

Combustion tube + porcelain dish are weighed. Tiub pembakaran + piring porselin ditimbang. Reading / Bacaan P

Combustion tube + porcelain dish + oxide of copper are weighed. Tiub pembakaran + piring porselin + oksida bagi kuprum ditimbang. Reading / Bacaan Q

Combustion tube + porcelain dish + copper are weighed after cooled. Tiub pembakaran + piring porselin + kuprum ditimbang selepas disejukkan. Reading / Bacaan R

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SULIT (a)

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Record the reading to two decimal places for: Catatkan bacaan kepada dua tempat perpuluhan bagi: (i)

Reading / Bacaan P : ................................................................................

(ii)

Reading / Bacaan Q : ...............................................................................

For Examiner’s Use

2(a) 3

(iii) Reading / Bacaan R : ................................................................................ [3 marks / markah] (b)

Construct a table to record the readings in the experiment. Bina satu jadual untuk merekodkan semua bacaan dalam eksperimen itu.

2(b) 3 [3 marks / markah] (c)

Classify the chemical formulae given into empirical formula and molecular formula. Kelaskan formula kimia yang diberi kepada formula empirik dan formula molekul.

C6H12O6

C3H6

CH

C2H4O2

CH2

CH2O

2(c) 3 [3 marks / markah]

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A2 9


SULIT 3

9

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Brazil, the fifth largest country in the world imports no oil, since half its cars run on alcohol fuel made from sugarcane. Diagram 3 shows an alcohol fuel station in Brazil. Brazil, negara yang kelima besar di dunia tidak mengimport petrol, separuh daripada kereta di negara itu menggunakan bahan api alkohol yang dibuat daripada air tebu. Rajah 3 menunjukkan sebuah stesen bahan api alkohol di Brazil.

Diagram / Rajah 3 Different types of alcohols produce different heat of combustions. The value of the heat of combustion depends on the number of carbon atoms per alcohol molecule. Plan a laboratory experiment to compare the heat combustion of methanol, ethanol and propan-1-ol. Jenis alkohol yang berlainan menghasilkan haba pembakaran yang berlainan. Nilai haba pembakaran bergantung kepada bilangan atom karbon per molekul alkohol. Rancang satu eksperimen makmal untuk membandingkan haba pembakaran bagi metanol, etanol dan propan-1-ol. Your planning should include the following aspects: Perancangan anda hendaklah mengandungi aspek-aspek berikut: (a) Problem statement Pernyataan masalah (b) All the variables Semua pemboleh ubah (c) Statement of the hypothesis Pernyataan hipotesis (d) List of materials and apparatus Senarai bahan dan radas (e) Procedure for the experiment Prosedur eksperimen (f) Tabulation of data Penjadualan data [17 marks / 17 markah]

END OF QUESTION PAPER KERTAS SOALAN TAMAT

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INFORMATION FOR CANDIDATES MAKLUMAT UNTUK CALON 1.

This question paper consists of two questions: Question 1, Question 2 and Question 3. Kertas soalan ini mengandungi dua soalan: Soalan 1, Soalan 2 dan Soalan 3

2.

Answer all questions. Write your answers for Question 1 and Question 2 in the spaces provided in this question paper. Jawab semua soalan. Tulis jawapan anda bagi Soalan 1 dan Soalan 2 pada ruang yang disediakan dalam kertas soalan ini.

3.

Write your answer for Question 3 on the testpad provided by the invigilators. You may use equations, diagrams, tables, graphs and other suitable methods to explain your answers. Tulis jawapan anda bagi Soalan 3 pada kertas kajang yang dibekalkan oleh pengawas peperiksaan. Anda boleh menggunakan persamaan, rajah, jadual, graf dan cara lain yang sesuai untuk menjelaskan jawapan anda.

4.

Show your working, it may help you get marks. Tunjukkan kerja mengira, ini membantu anda mendapat markah.

5.

The diagrams in the questions are not drawn to scale unless stated. Rajah dalam soalan tidak dilukis mengikut skala kecuali dinyatakan.

6.

The marks allocated for each question or sub-part of a question are shown in brackets. Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan dalam kurungan.

7.

If you wish to change your answer, cross out the answer that you have done. Then, write down the new answer. Sekiranya anda hendak menukar jawapan, batalkan jawapan yang telah dibuat. Kemudian, tulis jawapan yang baharu.

8.

You may use a scientific calculator. Anda dibenarkan menggunakan kalkulator saintifik.

9.

You are advised to spend 45 minutes to answer Question 1 and Question 2 and 45 minutes for Question 3. Anda dinasihatkan supaya mengambil masa 45 minit untuk menjawab Soalan 1 dan Soalan 2 dan 45 minit untuk Soalan 3.

10.

Tie the testpad together with this question paper and hand in to the invigilators at the end of the examination. Ikat kertas kajang bersama-sama kertas soalan ini dan serahkan kepada pengawas peperiksaan pada akhir peperiksaan.

Disediakan oleh:

Disemak oleh:

Disahkan oleh:

......................................................... (CIK INTAN ZAREENA ZAHEDI)

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

................................................ (PN. NORLIZA MD DERUS) Guru Kanan Sains

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