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Published by lieayanaman, 2019-02-22 20:50:00

KIM

KIM

2. Rajah (a) menunjukkan simbol-simbol atom bagi unsur P, Q, R dan S.
Diagram (a) shows the symbols of atom for element P, Q, R and S.

P23 Q35 R37 S20

11 17 17 10

(a) (i) Apakah yang dimaksudkan dengan nombor proton?
What is meant by proton number?

[ 1 markah]
[1 mark]

(ii) Apakah nombor proton untuk atom Q?
What is the proton number for atom Q?

[ 1 markah]
[1 mark]

3. (a) Jadual di bawah menunjukkan maklumat bagi atom-atom P,Q,R.
Table below shows the information of atoms P,Q,R.

Atom Bilangan proton Bilangan neutron Nombor Nukleon
Number of protons Number of neutrons Nucleon Number
P
Q 12 12 24
R 17 35
20 20 40

(i) Apakah yang dimaksudkan dengan nombor nukleon?
What is meant by nucleon number?

[ 1 markah]
[1 mark]

(ii) Nyatakan bilangan neutron bagi unsur Q.
State the number of neutrons for element Q.

[ 1 markah]
[1 mark]

(iv) Nyatakan bilangan elektron bagi unsur R.
State the number of electrons for element R.

[ 1 markah]
[1 mark]

(b) Jadual di bawah menunjukkan suhu daripada satu eksperimen untuk
menentukan takat beku naftalena.
Table below shows the temperature from an experiment to determine the
freezing point of naphthalene.

Time (s) 0 30 60 90 120 150 180 210
Temperature 95 85 82 80 80 80 80 70

(C)

(i) Pada kertas graf yang disediakan, lukiskan graf suhu melawan masa bagi
penyejukan naftalena.
On the graph paper provided, draw the graph of temperature against time

for the cooling of naphthalene.

[ 3 markah]
[3 marks]

(ii) Menggunakan graf di b(i), tentukan takat beku naftalena. Tunjukkan pada
graf bagaimana anda menentukan takat beku ini.
Using the graph in b(i), determine the freezing point of naphthalene. Show
on the graph how you determine this freezing point.
[ 1 markah]
[1 mark]

4. Rajah di bawah menunjukkan satu proses berlaku pada iodin di dalam balang gas.
Diagram below shows a process occurs on iodine in a gas jar.

Selepas beberapa jam
After a few hours

Pepejal iodin
Iodine solid

Gas iodin
Iodine gas

(a) (i) Namakan proses itu.
Name the process.

[1 markah]
[1 mark]

(ii) Nyatakan jenis zarah dalam iodin.
State the type of particle in iodine.

[1 markah]
[1 mark]

(iii) Tulis formula kimia bagi iodin.
Write the chemical formula for iodine.

[1 markah]
[1 mark]

(iv) Lukis susunan zarah-zarah iodin dalam keadaan pepejal dan keadaan gas.
Draw the arrangement of iodine particles in solid state and gaseous state.

Pepejal Gas
Solid Gas

[2 markah]
[2 marks]

(b) (i) Balang gas mengandungi pepejal iodin direndamkan dalam air panas.
Nyatakan kadar perubahan fizikal bagi iodin.
The gas jar contains iodine solid is immersed in hot water.
State the rate of physical change of iodine.

[1 markah]
[1 mark]

(ii) Terangkan jawapan anda di b(i) dengan menggunakan teori kinetik jirim.
Explain your answer in b(i) by using kinetic theory of matter.

[2 markah]
[2 marks]

(c) Rajah di bawah menunjukkan resapan berlaku bila penutup dialihkan.
Diagram below shows diffusion occurs when the cover is removed.

Gas P Campuran
gas P dan gas Q
Penutup
Cover Mixture of
gas P and gas Q
Gas Q

(i) Nyatakan maksud resapan.
State the meaning of diffusion.

[1 markah]
[1 mark]

(ii) Warna gas Q ialah perang manakala gas P tak berwarna. Campuran gas P
dan Q dihasilkan apabila penutup dialihkan. Nyatakan warna bagi
campuran itu.
The colour of gas Q is brown while gas P is colourless. Mixture of gas P
and Q is produced when the cover is removed. State the colour of the
mixture.

[1 markah]
[1 mark]

5. Rajah di bawah menunjukkan struktur atom P bagi satu unsur.
Diagram below represents the structure of an atom P of an element.

X X : _______________

ZY Y : _______________
X YYZ Z : _______________

ZZ

X

(a) (i) Merujuk kepada rajah, namakan zarah subatom.
Tuliskan jawapan dalam ruang yang disediakan.
Referring to diagram, name the subatomic particles.
Write your answer in the spaces provided.

[3 markah]
[3 marks]

(ii) Nyatakan dua zarah subatom yang mempunyai jisim yang sama.
State two subatomic particles that have the same mass.

[1 markah]
[1 mark]

(iii) Nyatakan nombor proton dan nombor nukleon bagi atom P.
State the proton number and nucleon number of atom P.

Nombor proton :

Proton number :

Nombor nukleon
:
Nucleon number
:

[2 markah]
[2 marks]

(iv) Tuliskan perwakilan piawai bagi atom unsur P.
Write the standard representation for an atom of element P.

[1 markah]
[1 mark]


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