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SMK AMBROSE, AYER TAWAR
PEPERIKSAAN UJIAN SELARAS 1 2013
CHEMISTRY FORM 4 ( 1 JAM)
NAME: FORM: 4 Science 1
This paper consists of part A (multiple choices questions), part B (structured question) and part
C (essay question). Answer all the questions.
PART A: MULTIPLE CHOICES QUESTION
1. What is the first step in a scientific
investigation?
Apakah langkah pertama dalam kaedah
saintifik?
A Making a hypothesis
Membuat hipotesis
B Making an observation
Membuat pemerhatian
C Identifying the problem
Mengenal pasti masalah
D Planning an experiment
Merancang eksperimen
2. Which substance is an element?
Yang manakah bahan yang merupakan
unsur?
A Air
UdaraB Stim
Wap
C Carbon Karbon
D Naphthalene
Naphtalena
Diagram 1
3. Diagram 1 shows the particles
arrangement of a substance at room
temperature. This arrangement ofparticles can be found in
Rajah 1 menunjukkan susunan zarah
bahan pada suhu bilik. Susunan zarahini dapat dilihat dalam
A carbon
B copper
C oxygenD water
4. Which of the following processes,
proved the kinetic theory of matter?
Yang manakah antara proses berikut
membuktikan teori kinetik jirim?A Diffusion
Serapan
B Photosynthesis Fotosintesis
C Respiration
RespirasiD Neutralization (peneutralan)
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Diagram 2
5. Diagram 2 shows the apparatus set - up
to investigate Process X. What isProcess X?
Rajah 2 menunjukkan susunan radas
untuk menyiasat proses X. apakahproses X?
A Diffusion
B CondensationC Evaporation
D Sublimation
Diagram 3
6. Diagram 3 shows the change of state of
matter. Which of the following is
process X?Rajah 3 menunjukkan perubahan pada
keadaan jirim. Yang manakah adalah
proses X?
A melting
B boiling
C freezingD condensation
Diagram 4
7. Diagram 4 shows the inter conversion of
water, steam and ice. In which
conversion do H2O molecules lose
speed?
Rajah 4 menunjukkan perubahan
berbalik bagi air, stim dan ais. Manakah
keadaan di manakah molekul air akan
kehilangan kelajuan?
A Ice> water
B Ice> steam
C Water> steamD Steam> ice
8. The melting point and boiling point of
substance M is -37 C and 5 C
respectively. The physical state of
substance M at room temperature is
Takat lebur dan takat didih bagi bahan
M masing-masing ialah -37 C dan 5
C. keadaan fizikal bagi bahan M pada
suhu bilik ialah
A gas
B liquid
C solid
D gas and liquid
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Substance Melting point Boiling point
W -187 C -126 C
X -78 C 70 C
Y 75 C 130 C
Z 114 C 444 C
Table 1
9. Table 1 shows the melting point and
boiling point of substances W, X, Y and
Z. Which substance is a liquid at room
temperature?
Rajah 1 menunjukkan takat lebur dan
takat didih bagi bahan W, X, Y, dan Z.
Yang manakah antara bahan berikutcecair pada suhu bilik.
A WB XC Y
D Z
Substance Melting point Boiling point
P -59 C 60 C
Q 48 C 130 C
R -110 C -70 C
S 128 C 470 C
Table 2
10. Table 2 shows the melting and boiling
points of substances P, Q, R and S.
Which of the following substances has
the highest kinetic energy at roomtemperature?
Rajh 2 menunjukkan takat didih dan
takat lebur bagi bahan P, Q, R, dan S.
Yang manakah antara bahan berikutmempunyai tenaga kinetik paling tinggi
pada suhu bilik?A PB Q
C R
D S
11. Which of the following atomic
models was proposed by Ernest
Rutherford?
yang manakah antara model atom berikut
diperkenalkan oleh Ernest Rutherford?
A The atom is the smallest particle
Atom ialah zarah terkecil
B The atom is a positively charged sphere
Atom ialah sfera bercas positif
C The atom contains a nucleus that is
surrounded by electrons moving at random
Atom mengandungi nukleus yang
dikelilingi oleh elektron yang bebas
bergerak
D The atom contains a nucleus that issurrounded by electrons that move in certain
shells.
Atom mengandungi nukleus yang
dikelilingi oleh elektron yang bergerak dalm
petala.
11. Which of the following scientists
discovered proton?
Yang manakah antara saintis berikutyang menjumpai proton?
A Neils Bohr
B J. J ThomsonC James Chadwick
D Ernest Rutherford
12. Which of the following statements is
true about atomic model proposed by
Ernest Rutherford?
Yang manakah antara keterangan di
bawah benar tentang model atom yang
diperkenalkan oleh Ernest Rutherford?
A The electrons in an atom move in shells
around the nucleus which contains proton.
Elektron dalam atom bergerak dalam
petala mengelilingi nukleus yang juga
mengandungi proton.
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B The atom was described as a sphere of
positive charge embedded with electron.
Atom dilihat sebagai sfera yang bercas
positif bersama dengan elektron.
C The nucleus of the atom contains proton
and neutrons.
Nukleus atom mengandungi proton dan
neutron.
D The nucleus of the atom contains proton.
Nukleus atom mengandungi proton.
14. Diagram 5 shows a model of an atom.
Diagram 5
Who introduced this model?Siapakah yang memperkenalkan model ini?
A Neils Bohr
B John DaltonC J.J. Thomson
D Ernest Rutherford
15. The nucleus of an atom contains Nukleus atom mengandungi
A electrons only
B neutrons only
C both protons and neutronsD both protons and electrons
16. Diagram 6 shows the atomic
representation of an atom
Diagram 6
Number 23 refers to
Nombor 23 merujuk sebagai
A nucleon numberB number of proton
C atomic number
D number of neutron
17. The information below shows the
electron arrangement and the number of
neutrons in an atom Y. Y is not the actual
symbols of elements.Maklumat di bawah menunjukkan susunan
elektron dan nombor neutron dalam atom Y.
Electron arrangement 2.8.3
Number of neutrons 14
Which of the following symbol represents
the atom Y?
Yang manakah simbol berikut mewakili
atom Y?
18. Which of the following electron
arrangement of an atom has eight electrons
valence?
Yang manakah di antara susunan elektron
atom yang mempunyai lapan elektron
valens?
A 2.6
B 2.8.2
C 2.8.8
D 2.8.8.2
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19. Carbon-14 is an isotope of carbon. What is the use of carbon-14?
Carbon-14 ialah isotop bagi karbon. Apakah kegunaan karbon-14?
A Estimate the age of fossils and artefacts
Menganggarkan umur fosil dan artifak
B Radiotherapy for the treatment of cancer
Radioterapi untuk rawatan kanser
C Regulate the heartbeats of patients with heart problems
Mengenal pasti denyutan jantung pesakit dengan masalah jantung
D Destroy bacteria in food without changing the quality of food
Memusnahkan bakteria dalam makanan tanpa mengubah kualiti makanan tersebut
20. Which of the following isotopes is used in archaeology?
Yang manakah isotop berikut digunakan dalam arkeologi?
A Cobalt-60B Carbon-14C Iodine-131D Phosphorus-32
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PART B: STRUCTURED QUESTIONS
1. Figure 1 shows the setup of the apparatus used in an experiment to determine the
melting point and freezing point of substance X.
Rajah 1 menunjukkan susunan radas untuk menentukan takat lebur dan takat
didih untuk bahan X?
(a) Why is a water bath used to heat the substance X?
Mengapa air panas digunakan untuk memanaskan bahan X?
_____________________________________________________________________
[1 M]
(b) Graph 1 show the temperature against time when solid of substance X is heated.
Graf 1 menunjukkan suhu melawan masa apabila pepejal bahan X dipanaskan.
Graph 1
(i) What is the melting point of substance X?
Apakah takat lebur bahan X?
_______________________________________________________________
[1 M]
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(ii) State the physical state of substance X at point M.
Nyatakan keadaan fizikal bahan X pada titik M.
_______________________________________________________________
[1 M]
(iii) State the change of kinetic energy along the region AB.Nyatakan perubahan tenaga kinetic sepanjang AB.
_______________________________________________________________
[1 M]
(iv) Draw the arrangement of particles of substance X at 60 C and 90 C.
Lukis susunan zarah bahan X pada suhu 60 oC dan 90 oC.
[2M]
60 C 90 C
(v) Explain why the temperature remains constant from point B to pointC?
Terangkan kenapa suhu kekal sama dari titik B ke titik C?
_______________________________________________________________
_______________________________________________________________
[2 M]
(c) A substance Y has a melting point of 150 C. Predict whether the melting point of
Y can be determined using the water bath. Explain why?
Bahan Y mempunyai takat lebur 150 C. ramalkan samada takat lebur Y boleh
ditentukan menggunakan air panas. Terangkan kenapa?
__________________________________________________________________
__________________________________________________________________
[2 M
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2. Table 3 shows the proton number and nucleon number for atoms P, Q, R and S.
The letters used do not represent the actual symbols of the atoms.
Jadual 3 menunjukkan nombor proton dan nombor nucleon untuk atom P, Q, R,
dan S.
Atom Proton number Nucleon number
P 6 12
Q 6 14
R 11 24
S 12 24Table 3
(a) What is meant by proton number? Which scientist discovered it?
Apakah maksud nombor proton?saintis manakah yang menjumpainya?
____________________________________________________________________
_
[2 M]
(b) Determine the number of neutrons in these atoms. [2M]
Tentukan nombor nuetron
(i) P : ___________________________
(ii) R : ___________________________
(c) Write the symbol for atom Q in the form ofAzX [1M]
Tulis symbol atom Q dalam bentukAzX.
(d) For the atom S:
(i) Write the electron arrangement. [1M]
Tuliskan susunan electron.
_______________________________________________________________
[1 M]
(ii) State the number of valence electron. [1M] Nyatakan bilangan electron valens.
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_______________________________________________________________
[1 M]
(e) (i) Which atoms are isotopes? [1M]
Atom manakah isotope?
_______________________________________________________________
[1 M]
(ii) Explain your answer in (e)(i). [1M]
____________________________________________________________[1 M]
(iii) State one use of the isotope in (e)(i) which is radioactive. [1M]
_____________________________________________________________________
[1 M]
~END OF QUESTIONS PAPER~
Prepared by; Checked by; Approved by;
____________________ __________________ _____________________
En Mohd Ridzuan Puan Rozita Puan Suzana
Chemistry Teacher Head of Chemistry Panel Head of Science & MathDepartment
SMK Ambrose SMK Ambrose SMK Ambrose