krt science t4 raya 13

SEKOLAH MENENGAH KEBANGSAAN DATO’ PENGGAWA BARAT

JALAN PARIT MASJID, PONTIAN, JOHOR

KERJA RUMAH TERANCANG (KRT)

AUGUST 2013

SCIENCE

FORM 4

NAME : ………………………….………………………………

FORM : …………………................

KERJA RUMAH TERANCANG: SAINS TINGKATAN 4

OGOS 2013

BAB 5 : TENAGA DAN PERUBAHAN KIMIA

PAPER 1 (KERTAS 1)

QUESTION CHAPTER 5 : FORM 4

SOALAN BAB 5 : TINGKATAN 4

1. The diagram shows an experiment to study the heat change in a chemical reaction.

Gambar rajah menunjukkan suatu eksperimen untuk mengkaji perubahan haba dalam satu tindak

balas.

What type of reaction is involved?

Apakah jenis tindak balas yang berlaku?

A Exothermic

Eksotermik

B Endothermic

Endotermik

C Neutralization

Peneutralan

D Decomposition

Penguraian

2. The diagram shows the position of metal X in the reactivity series of metals.


OGOS 2013

Gambar rajah menunjukkan kedudukan logam X dalam siri kereaktifan logam.

Metal X Reactivity increase Logam X Kereaktifan bertambah

Carbon Karbon

Copper Kuprum

What is metal X?

Apakah logam X?

A Zinc

Zink

C Lead

Plumbum

B Iron

Ferum

D Magnesium

Magnesium

3. The diagram shows a process involved in a green plant.

Gambar rajah menunjukkan satu proses yang berlaku dalam pertumbuhan hijau.

Which of the following substances are produced in the above process?

Antara berikut bahan yang manakah dihasilkan daripada proses di atas?

I Glucose

Glukosa

II Oxygen

Oksigen

III Nitrogen

Nitrogen

A I and II only

I dan II sahaja

B I and III only

I dan III sahaja

C II and III only

II dan III sahaja

D I, II and III

I, II dan III

4. Diagram shows a reaction between a metal and dilute acid.

Sunlight

Cahaya matahari

Carbon dioxide

Karbon dioksida

Water

Air


OGOS 2013

Rajah menunjukkan tindak balas satu logam dengan asid cair.

What is gas X?

Apakah gas X?

A Chlorine

Klorin

B Oxygen

Oksigen

C Nitrogen

Nitrogen

D Hydrogen

Hidrogen

5. Which metal can be extracted from its ore through the process of reduction using carbon?

Logam yang manakah boleh diekstrak daripada bijihnya melalui proses penurunan dengan

menggunakan karbon?

A Tin

Timah

B Calcium

Kalsium

C Aluminium

Aluminium

D Magnesium

Magnesium

6. Table shows the observations obtained when three types of metal powder react with oxygen.

Gas X

Gas X

Diluted acid

Asid cair

Magnesium

Magnesium


OGOS 2013

Jadual menunjukkan pemerhatian yang diperoleh apabila tiga jenis serbuk logam bertindak

dengan oksigen.

Metal powder

Serbuk logam

Observation

Pemerhatian

X Bright glow

Baraan terang

Y No change

Tiada perubahan

Z Dim glow

Baraan malap

Choose the correct sequence of the reactivity of the metal in descending order.

Pilih urutan yang betul bagi kereaktifan logam itu dalam tertib menurun.

A X, Z, Y

B X, Y, Z

C Y, X, Z

D Z, Y, X

7. Diagram shows the electroplating of an iron key with copper.

Rajah menunjukkan penyaduran kunci besi dengan kuprum.

What is solution X?

Apakah larutan X?

A Silver nitrate

Argentum nitrate

B Sodium chloride

Natrium klorida

C Copper sulphate

Kuprum sulfat

D Potassium hydroxide

Kalium hidroksida

8. Table shows the advantages and disadvantages of a type of cell.

Iron key

Kunci besi

Solution X

Larutan X

Copper

Kuprum


OGOS 2013

Jadual menunjukkan kelebihan dan kekurangan bagi sejenis sel.

Advantages

Kelebihan

Disadvantages

Kekurangan

High voltage

Voltan tinggi

Rechargeable

Boleh dicas semula

Long lasting

Tahan lama

Heavy

Berat

Expensive

Mahal

Electrolyte spills easily

Elektrolit mudah tumpah

What is the cell?

Apakah sel itu?

A Dry cell

Sel kering

B Lead- acid accumulator

Akumulator asid plumbum

C Nickel-cadmium battery

Bateri nikel cadmium

D Silver oxide-mercury battery

Bateri argentum oksida merkuri

9. Which of the following is an example of a physical change?

Antara yang berikut, yang manakah contoh perubahan fizik?

A Frying of egg

Penggorengan telur

B Melting of ice

Peleburan ais

C Rusting of nail

Pengaratan paku

D Burning of paper

Pembakaran kertas

10. Which metal can be extracted from its ore by heating it with carbon?

Logam yang manakah boleh diekstrak daripada bijihnya secara pemanasan dengan karbon?

A Tin

Tin

B Sodium

Natrium

C Potassium

Kalium

D Aluminium

Aluminium

11. Diagram shows an electrolytic cell.


OGOS 2013

Rajah menunjukkan sel elektrolisis.

What is Z?

Apakah Z?

A Anion

Anion

C Cation

Kation

B Anode

Anod

D Cathode

Katod

12. The following information shows the characteristics of battery X.

Maklumat berikut menunjukkan ciri-ciri bateri X.

What is X?

Apakah X?

A Dry cell

Sel kering

B Mercury cell

Sel merkuri

C Nickel cadmium battery

Bateri nikel cadmium

D Lead acid accumulator

Akumulator asid plumbum

13. Which diagram shows an experiment that involves chemical changes?

Use in mobile phone

Digunakan dalam telefon mudah alih

Rechargeable

Boleh dicas semula


OGOS 2013

Rajah manakah yang menunjukkan eksperimen yang melibatkan perubahan kimia?

14. Diagram shows how electrolysis is used to purify copper.

Rajah menunjukkan bagaimana elektrolisis digunakan untuk menulenkan kuprum.

Predict what happens at the cathode.

Ramalkan apa yang berlaku di katod.

A Gas is released

Gas dibebaskan

B Mass unchanged

Jisim tidak berubah

C Mass decreases

Jisim berkurangan

D Copper is deposited

Kuprum dienapkan

15. The following word equation shows a chemical reaction.


OGOS 2013

Persamaan perkataan berikut menunjukkan suatu tindak balas kimia.

What is the process represented by the equation?

Apakah proses yang diwakili oleh persamaan ini?

A Photosynthesis

Fotosintesis

B Esterification

Pengesteran

C Respiration

Respirasi

D Fermentation

Penapaian

16. Diagram shows a bicycle with a component labelled X.

Rajah menunjukkan sebuah basikal dengan komponen berlabel X.

Which process can be used to avoid rusting for component X?

Proses manakah boleh digunakan untuk mengelakkan pengaratan bagi komponen X?

A Drying

Pengeringan

B Extraction

Pengekstrakan

C Purification

Penulenan

D Electroplating

Penyaduran elektrik

Light

Carbon dioxide + Water Cahaya Glucose + Oxygen

Karbon dioksida Air Chlorophyll Glukosa Oksigen

Klorofil


OGOS 2013

17. The following word equation shows a chemical process.

Persamaan perkataan berikut menunjukkan suatu tindak balas kimia.

What is X?

Apakah X?

A Nitrogen

Nitrogen

B Hydrogen

Hidrogen

C Carbon dioxide

Karbon dioksida

D Sulphur dioxide

Sulfur dioksida

X + Water Chlorophyll Glucose + Oxygen

Air Klorofil Glukosa Oksigen


OGOS 2013

PAPER 2 (KERTAS 2)

CHAPTER 5 : ENERGY AND CHEMICAL CHANGES

BAB 5 : TENAGA DAN PERUBAHAN KIMIA

SECTION A

(2006)

REACTIVITY SERIES OF METALS

1. A student has conducted an experiment to study the reaction of magnesium and

hydrochloric acid.

Hydrogen gas is produced during the reaction. The volume of gas collected is recorded

every 30 seconds

Table shows the result of this experiment.

Seorang murid menjalankan eksperimen untuk mengkaji tindak balas magnesium dan

asid hidroklorik..

Gas hidrogen dihasilkan semasa tindak balas itu. Isipadu gas yang dikumpulkan dicatatkan

setiap 30 saat.

Jadual menunjukkan keputusan eksperimen ini.

Time/seconds

Masa/saat

0 30 60 90 120 150 180

Volume of hydrogen gas/cm3

Isipadu gas hidrogen/cm3

0 15 26 35 40 40 40

Based on the Table , draw a graph of the volume of hydrogen gas against time.

Berdasarkan Jadual , lukis graf isipadu gas hidrogen melawan masa.


OGOS 2013

(b) Based on the graph in l(a); state the relationship between the volume of hydrogen gas and

time in the first 90 seconds.

Berdasarkan graf di 1(a), nyatakan hubungan antara isipadu gas hidrogen dan masa

dalam 90 saat pertama.

………………………………………………………………………………………..

[1 mark]

(c) Tick ( √ ) in the boxes in Table the substances which can be used to replace magnesium in

this experiment.

Tandakan ( √ ) dalam petak padaJadual bagi bahan yang boleh menggantikan magnesium

dalam eksperimen ini.

Iron

Besi

Carbon

Karbon

Sulphur

Sulfur

Zinc

Ztnk

[1 mark]

Volume of

hydrogen

gas/cm3

Isipadu gas

hidrogen/cm3

Time/seconds

Masa/saat 150 90 120 180


OGOS 2013

(2008)

HEAT CHANGE IN CHEMICAL REACTION

2 Diagram A and Diagram B show an experiment to study the heat change in chemical

reactions at room temperature.

Rajah A dan Rajah B menunjukkan xatu eksperimen untuk mengkaji perubahan haba

dalam tindak balas kimia pada suhu bilik.

(a) Based on Diagram , what is your observation about the change in temperature?

Berdasarkan Rajah , apakah pemerhatian anda tentang perubahan suhu?

Mark (√ ) for your answer in Table

Tandakan ( √ ) untuk jawapan anda dalam Jadual

Temperature decreases

Suhu menurun

No change in temperature

Tiada perubahan suhu

Temperature increases Suhu menaik

[1 mark]

Diagram A

Rajah A

Diagram B

Rajah B


OGOS 2013

(b) What is the final reading of the thermometer in Diagram B?

Apakah bacaan akhir termometer pada Rajah B?

………………………………………………………………………………………..

[1 mark]

(c) State the variables in this experiment.

Nyatakan pembolehubah dalam eksperimen ini.

(i) Constant variable

Pembolehubah dimalarkan

…………………………………………………………………………………..

[1 mark]

(ii) Responding variable

Pembolehubah bergerak balas

…………………………………………………………………………………….

[1 mark]

(d) State one hypothesis for this experiment.

Nyatakan satu hipotesis untuk eksperimen ini.

………………………………………………………………………………………...

[1 mark]


OGOS 2013

SECTION B

(2006)

ELECTROLYSIS

1. Diagram shows the set up of apparatus in an experiment.

Rajah menunjukkan susunan radas dalam suatu eksperimen.

(a) Name the process in the Diagram .

Namakan proses dalam Rajah .

………………………………………………………………………………………..

[1 mark]

(b) (i) Name metal M.

Namakan logam M.

……………………………………………………………………………………

[1 mark]

(ii) What happens to metal M during the process in the Diagram ?

Apakah yang berlaku pada logam M semasa proses dalam Rajah ?

……………………………………………………………………………………

[1 mark]

(c) Which metal functions as the cathode?

Logam yang manakah berfungsi sebagai katod?

………………………………………………………………………………………

[1 mark]

Iron key

Kunci besi

Copper (II) sulphate solution

Larutan kuprum (II) sulfat

Metal M

Logam M


OGOS 2013

(d) (i) What will happen to the iron key at the end of the experiment?

Apakah yang berlaku pada kunci besi di akhir eksperimen?

……………………………………………………………………………………

[1 mark]

(ii) State one method to get a good result in 7(d)(i).

Nyatakan satu cara untuk mendapatkan keputusan yang baik di 7(d)(i).

……………………………………………………………………………………

[1 mark]

SECTION C

(2005)

PHYSICAL & CHEMICAL CHANGES

1 There are two types of change in matter, physical change and chemical change.

Terdapat dua jenis perubahan jirim iaitu perubahan fizik dan perubahan kimia.

(a) Figure shows the burning of magnesium ribbon in air.

Rajah menunjukkan pembakaran pita magnesium dalam udara.

State four reasons why the above reaction is considered to be a chemical change.

Nyatakan empat sebab mengapa tindak balas di atas merupakan suatu perubahan kimia.

[4 marks]

Magnesium ribbon burns

Pita magnesium terbakar


OGOS 2013

(b) Figure below shows physical changes in three different substances.

Rajah di bawah menunjukkan perubahan fizik yang berlaku ke atas tiga bahan yang

berlainan.

Study the information in Figure and construct the concept of physical change.

Kaji maklumat dalam Rajah dan bina konsep tentang perubahan fizik.

Your answer should be based on the following steps;

Jawapan anda hendaklah berdasarkan langkah-langkah berikut;

Identify the information

Mengenal pasti maklumat

[ 1 mark]

[1 markah]

Identify the common characteristics

Mengenal pasti ciri-ciri sepunya

[ 2 mark]

[2 markah]

Relate the common characteristics to the physical changes in

order to construct the initial concept.

Menghubungkaitkan antara ciri-ciri sepunya dengan perubahan

fizik untuk membina konsep awal

[ 1 mark]

[1 markah]

Give an example of another physical change and a non physical

change

Menyatakan satu contoh lain perubahan fizik dan satu contoh

bukan perubahan fizik.

[ 1 mark]

[1 markah]

State the actual concept of physical change

Menyatakan konsep sebenar perubahan fizik

[ 1 mark]

[1 markah]


OGOS 2013

(2010)

PRODUCTION OF ELECTRICAL ENERGY

2 (a) State two advantages and two disadvantages of the lead-acid accumulator.

Nyatakan dua kebaikan dan dua kelemahan akumulator asid-plumbum

[4 marks]

(b) A student found that the iron spoons in his school laboratory were rusty.

Explain how he could prevent the spoons from rusting.

Your explanation should include the folio wing aspects:

Seorang murid mendapati sudu-sudu besi di makmal sekolahnya telah berkarat.

Terangkan bagaimana murid ini dapat menghalang sudu besi daripada berkarat.

Penerangan anda hendaklah mengandungi aspek-aspek berikut:

- Identify the problem

Kenal pasti masalah [1 mark]

- The method used

Kaedah yang digunakan [1 mark]

- Explanation of the method

Penjelasan kaedah [4 marks]

krt science t4 raya 13

Documents