1 SMK TINGGI SARIKEI 2016 FIRST MID TERM EXAMINATION INSTRUCTION : 1. This paper consist of three SECTION, SECTION A , SECTION B and SECTION C 2. Answer ALL questions. NAME: ……………………………………….CLASS: ………..SECTI ON A (25%) Each qu e s tion i s f oll owe d by fou r options A, B, C or D. Choos e the be s t opti on f or e ach ques tion and cir cle y our ans we r . 1. Which of the following statements is true regarding chemical? Antara pernyataan berikut yang man akah benar tentang kimia? A.Each matter is a chemical. Setiap jirim ialah kimia B.Air is not considered as a chemical. Udara tidak dikenali sebagai kimia C.Chemicals are only found in laboratories. Bahan kimia hanya didap ati di dalam makmal D.All chemicals are dangerous substances. Semua bahan kimia adalah bahan berbahaya 2. A student is required to study the effects o f temperature on the rate of react ion between sodium thiosulphate solution and dilute sulphuric acid. What is the manipulated variable and the respondin g variable in the experiment? Seorang pelajar perlu menguji kesan suhu ke atas kadar tindak balas antara larutan natrium tiosulfat dan asid sulphuric cair. Apakah pemboleh ubah dimanipulasi dan bergerak balas dalam eksperimen ini? Manipulated variable Responding variable A Temperature of sodium thiosulphate solution Suhu larutan natrium tiosulfat Rate of reaction Kadar tindak balas B Rate of reaction Kadar tindak balasConcentration of sulphuric acid Kepekatan asid sulfurik C Temperature of sulphuric acid Suhu asid sulfurik Temperature of sodium thiosulphate solution Suhu larutan natrium tiosulfatD Concentration of sodium thiosulphate solution Kepekatan asid sulfurikMass of sulphuric acid Jisim asid sulfurik MATA PELAJARAN : CHEMISTRY KOD MATA PELAJARAN : 4541 TINGKATAN : 4 (FOUR) MASA : 2 HOURS GURU PENYEDIA SOALAN : MR. LAW HUI NONG GURU PENYEMAK KERTAS SOALAN : MR. CHIEN HUI SIONG
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1. This paper consist of three SECTION, SECTION A , SECTION B and SECTION C
2. Answer ALL questions.
NAME: ………………………………………. CLASS: ………..
SECTI ON A (25%)
Each question is foll owed by four options A, B, C or D. Choose the best option for each question
and cir cle your answer.
1. Which of the following statements is true regarding chemical?
Antara pernyataan berikut yang manakah benar tentang kimia?
A. Each matter is a chemical.
Setiap jirim ialah kimia
B. Air is not considered as a chemical.
Udara tidak dikenali sebagai kimiaC. Chemicals are only found in laboratories.
Bahan kimia hanya didapati di dalam makmal
D. All chemicals are dangerous substances.
Semua bahan kimia adalah bahan berbahaya
2. A student is required to study the effects of temperature on the rate of reaction between sodium
thiosulphate solution and dilute sulphuric acid. What is the manipulated variable and the
responding variable in the experiment?
Seorang pelajar perlu menguji kesan suhu ke atas kadar tindak balas antara larutan natriumtiosulfat dan asid sulphuric cair. Apakah pemboleh ubah dimanipulasi dan bergerak balas
dalam eksperimen ini?
Manipulated variable Responding variable
A Temperature of sodium thiosulphate solution
Suhu larutan natrium tiosulfat
Rate of reaction
Kadar tindak balas
B Rate of reaction
Kadar tindak balas
Concentration of sulphuric acid
Kepekatan asid sulfurik
C Temperature of sulphuric acid
Suhu asid sulfurik
Temperature of sodium thiosulphate solution
Suhu larutan natrium tiosulfat
D Concentration of sodium thiosulphate solution Kepekatan asid sulfurik
Mass of sulphuric acid Jisim asid sulfurik
MATA PELAJARAN : CHEMISTRY
KOD MATA PELAJARAN : 4541
TINGKATAN : 4 (FOUR)
MASA : 2 HOURS
GURU PENYEDIA SOALAN : MR. LAW HUI NONGGURU PENYEMAK KERTAS SOALAN : MR. CHIEN HUI SIONG
14. A hydrated salt of barium chloride has a formula of BaCl2.nH2O with a relative formula mass
of 244. What is the value of n?
Suatu garam barium klorida terhidrat mempunyai formula BaCl 2.nH 2O dengan jisim formula
relative 244. Apakah nilai n?
[Relative atomic mass: Ba = 137, Cl = 35.5, H = 1, O = 16]
A.
1 B. 2 C. 3 D. 4
15. The syringe in Diagram 2 contains a mixture of gases.
Picagari dalam Rajah 2 mengandungi campuran gas.
Diagram 2
Which of the following is true regarding the gases?Yang manakah berikut benar tentang gas-gas tersebut?
[Avogadro constant 6 x 1021 mol -1 ]
A The carbon dioxide gas contains the same number of molecules as the oxygen gas.
Gas karbon dioksida mengandungi bilangan molekul yang sama dengan gas oksigenB The carbon dioxide gas contains the same number of atoms as the oxygen gas.
Gas karbon dioksida mengandungi bilangan atom yang sama dengan gas oksigen
C The total number of molecules in the syringe is 3 X 1023
molecules.
Jumlah bilangan molekul dalam picagari ialah 3 X 1023 molecules.
D There are more carbon dioxide molecules than oxygen molecules in the syringe.
Terdapat lebih banyak molekul karbon dioksida berbanding molekul oksigen dalam picagari
16. Diagram 3 shows four different metals.
Rajah 3 menunjukkan empat logam berbeza.
Diagram 3
Which of the following metals contains the most number of atoms?
Logam yang manakah mengandungi paling banyak bilangan atom?
[Relative atomic mass: Mg = 24, Fe = 56, Cu = 64, Zn = 65]
A. Magnesium B. Iron C. Copper D. Zinc
17. The molecular formula of cyclopentane is C5H10.
Which of the following molecular formulae has the same empirical formula as cyclopentane?
Formula molekul bagi siklopentana ialah C 5 H 10.
Yang manakah formula molekul berikut mempunyai formula empirik yang sama seperti
2 Table 2 show the proton numbers and nucleon numbers for four atoms R, S, T and U. Use the
information given in the table to answer the following questions. Jadual 2 di bawah menunjukkan nombor proton dan nombor neutron bagi empat atom R, S, T
dan U. Gunakan maklumat yang diberikan dalam jadual untuk menjawab soalan-soalan
berikut.
Atom
Atom
Proton number
Nombor proton
Nucleon number
Nombor nukleonR 10 20
S 12 24
T 17 35
U 17 37
Table 2 / Jadual 2
(a) What is meant by
Apakah yang dimaksudkan dengan
(i) Proton number
Nombor proton…………………………………………………………………………………..…
[1 mark / 1 markah](ii) Nucleon number
Nombor nucleon
…………………………………………………………………………………..…
[1 mark / 1 markah]
(b) State the number of electrons and number of neutrons in an atom of R.
Nyatakan bilangan elektron dan bilangan neutron yang terdapat dalam satu atom R.
…………………………………………………………………………………..…[2 mark s/2 markah]
(c) What is meant by isotope?
Apakah yang dimaksudkan dengan isotop?
…………………………………………………………………………………..…
…………………………………………………………………………………..…
[1 mark /1 markah]
(d ) (i) From the Table 1, choose a pair of isotopes.
Daripada Jadual 1 , pilih sepasang isotop.
…………………………………………………………………………………..…
[1 mark /1 markah]
(ii) Write the symbol of the isotopes in the form of X Tulis simbol bagi isotop-isotop tersebut dalam bentuk X
(iv) Diagram 2.1 shows the comparison between magnesium atom and the reference atom that
you are stated in (a)(i). Rajah 2.1 menunjukkan perbandingan antara atom magnesium dan atom rujukan seperti
dinyatakan di (a)(i).
Diagram / Rajah 2.1
Diagram 2.2 shows the comparison between magnesium atom and atom X.
Rajah 2.2 pula menunjukkan perbandingan antara atom magnesium dan atom X.
Diagram / Rajah 2.2
What is the relative atomic mass of X? Apakah jisim atom relatif X?
……………………………………………………………………………………………….
[ 1 mark / 1 markah]
(v) How many reference atom have the same mass as one atom X?
Berapa kali atom rujukan mempunyai jisim yang sama dengan satu atom X?
……………………………………………………………………………………………….
[ 1 mark / 1 markah]
(vi) How many times is one of the sulphur atom heavier than one of oxygen atom? Berapa kalikah satu atom sulfur lebih berat berbanding dengan satu atom oksigen?
[ Relative atomic mass / Jisim atom relatif : O = 16, S = 32]
……………………………………………………………………………………………….
[ 1 mark / 1 markah]
(b) Calculate the relative molecular mass for the following molecules:
Hitungkan jisim molekul relative bagi molekul-molekul berikut:
[ Relative atomic mass / Jisim atom relatif: H= 1, C=12, 0=16](i) Butane, C4H10 / Butana, C 4 H 10
Mr. Tee Hock TiangHead of Science & Mathematics Department
(ii) By using the kinetic theory of matter, explain how the following changes occur. Dengan menggunakan teori kinetik jirim, huraikan bagaimana perubahan di
bawah berlaku.
P to Q / P ke Q
P to R / P ke R
R to P / R ke P
In your explanation include the process occurs, the energy contents and themovement of the particles.
Huraian anda mestilah meliputi proses yang terlibat, kandungan tenaga dan
pergerakan jirim.
[9 marks]
(b) Diagram 3 shows an atom of element P. The letter used is not the actual symbol of the
element. Diagram 3 menunjukkan atom unsur P. Huruf yang digunakan simbol yang sebenar
unsur
DIAGRAM 3
(i) Describe the atom shown in Diagram 3
Terangkan atom yang ditunjukkan dalam Diagram 3
[4 marks]
(ii) Atom of element Q has 7 neutron, which is in the same group with P. Compare
atom P with the atom Q
Atom unsur Q mempunyai 7 neutron yang berada dalam kumpulan yang sama dengan
P. Bandingkan atom P dengan atom Q.
[2 marks]
(c) X is a substance which melts at 710C and boils at 3140C
X adalah sebatian yang melebur pada 710C dan mendidih pada 314
0C
Sketch a graph of temperature against time when molten X at 1000
C is cooled to60
0C
Lakarkan satu graf suhu melawan masa apabila X lebur pada 1000C disejukkan
kepada 600C
[2 marks]
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