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

2311 P 35

17 Q 3717 R 20

10 S(a) (i) What is meant by proton number?

Apakah yang dimaksudkan dengan nombor proton?

[ 1 mark/ 1 markah]

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

[ 1 mark/1 markah]

(b) (i) Write the electron arrangement for atom P.Tuliskan susunan elektron bagi atom P.

[ 1 mark/ 1 markah]

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

[ 1 mark/1 markah]

(iii) What is the nucleon number for atom P?Apakah nombor nukleon untuk atom P?

[ 1 mark/1 markah]

(c) (i) Which atoms have the same proton number?Atom manakah yang mempunyai nombor proton yang sama?

[ 1 mark/ 1 markah](ii) What is the number of neutron of atom R?

Berapakah bilangan neutron bagi atom R?

[ 1 mark/ 1 markah]

1

2

JUMLAH / 8

2. Table 1 shows the proton numbers, nucleon numbers and the number of neutrons of several elements.Jadual 1 menunjukkan nombor proton, nombor nukleon dan bilangan neutron beberapa unsur.

ElementUnsur

Proton numberNombor proton

Nucleon numberNombor nukleon

Number of neutron

Bilangan neutronP 6 6Q 7 14R 6 7S 16 8T 5 11

Table 1Jadual 1

(a) Complete the Table 1 above.Lengkapkan jadual 1

[3 marks /3 markah]

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

[1 mark /1 markah]

(c) Write the arrangement of electrons of Q and S.Tulis susunan elektron bagi Q dan S.

Q : __________________________

S : __________________________ [2 marks /2 markah]

(d) Determine the number of electron and number of neutron of atom U if the nucleon number is 21 and the proton number is 10.Tentukan bilangan elektron dan bilangan neutron bagi atom U jika nombor nukleonnya ialah 21 dan nombor protonnya ialah 10.

[2 marks /2 markah]

3. Graph 3 shows the temperature against time of solid substance X when heated. Substance X is anorganic compound and flammable.Graf 3 dibawah menunjukkan graf suhu melawan masa bagi bahan X apabila dipanaskan. Bahan X ialah sebatian organik dan mudah terbakar.

GRAPH 3

(a) (i) State the melting point of substance X Nyatakan takat lebur bagi bahan X........................................................................................................................................................

[ 1 mark/ 1 markah] (ii) What is the state of matter of substance X at : Apakah keadaan jirim bagi bahan X di PQ : .....................................................................................................................................................RS : .................................................................................................................................................... [ 2 marks/ 2 markah ]

(b) The temperature remains constant form Q to R. Explain it. Suhu kekal malar dari Q ke R. Terangkan keadaan ini.………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..

[2 marks/ 2 markah] (c) Draw the arrangement of particles for substance X at PQ and RS Lukis susunan zarah bagi bahan X pada keadaan PQ, dan RS [2 marks / 2markah]

3

PQ RS

JUMLAH / 7

4. Diagram below shows a change of state of matter Rajah di bawah menunjukkan perubahan keadaan jirim

a. Name process I and II Namakan proses I dan II

i. …………………………………….. ii……………………………………[2marks/2 markah]

b. Compare the arrangements of particles in X and Y in terms of following aspects Bandingkan kedua-dua susunan X and Y dari aspek berikut

X YArrangement of particlesSusunan zarah

Movement of particlesPergerakan zarah

Force of attraction between the particlesDaya tarikan antara zarahEnergy contentKandungan tenaga

[8 marks / 8 markah]

5. Write the chemical formula for the chemical compound below Tulis formula kimia bagi sebatian kimia berikut

a) Zinc chlorideZink Klorida

b) Sodium hydroxideNatrium Hidroksida

c) Lead bromidePlumbum Bromida

d) Copper (II) sulphateKuprum (II) sulfat

e) Zinc OxideZinc Oxide

f) Ferum (III) chlorideFerum (III) klorida

g) Potassium nitrateKalium nitrat

h) Calcium carbonateKalsium karbonat

4

JUMLAH / 10

[ 8 marks / 8 markah]

5

JUMLAH / 8