This document provides information about the structure of atoms and asks multiple choice and short answer questions. It includes: 1) A table showing the atomic structure of 5 elements with their atomic number and mass number. 2) Questions about the elements' chemical properties, electron configurations, valency electrons, and drawing atomic structures. 3) A diagram of an experiment investigating gas diffusion using iodine. 4) Questions about the type of diffusion, particle arrangements, state changes, and using kinetic theory to explain faster diffusion with heat. The document tests understanding of atomic structure, chemical properties, states of matter, and kinetic theory through multiple choice, drawing, labeling and short answer questions.

1. STRUCTURE OF ATOM
STRUCTURE QUESTION
1 Figure 1.1 shows the standard representation of five elements .
16 24 35 40 14
O Mg Cl Ca C
8 12 17 20 6
FIGURE 1.1
Based on the above elements, answer the following questions:
(a) State the two elements which have similar chemical properties.
..
……………………………………………………………………………………......
[1 mark]
(b) Explain your answer in (a).
………………………………………………………………………..........................
[1 mark]
(c) Write the electron arrangement for the ion formed from Cl.
……………………………………………………………………………………........
[1 mark]
(d) What is the number of valency electrons found in atom C?
………………………………………………………………………………………...
[1 mark]
(e) Draw the electron arrangement for atom O.
[2 marks]

2. (f) Figure 1.2 shows three types of hydrogen atoms.
F
e e
e
p
p n
n p n
Hydrogen Deuterium Tritium
FIGURE 1.2
(i) Name the positively charged sub-atomic particles found in the nucleus.
………………………………................................................................................
[1 mark]
(ii) What is the name given to atoms which have the same number of protons but
different number of neutrons?
……………………………………………………………………………..........
[1
mark]
(iii) State the nucleon number for the tritium atom .
…………………………………………………………………………..............
[1
mark]

3. JAWAPAN
1 (a) Q, S 1 1
(b) Have the same number of valence electron/ In the same Group.
1 1
(c) 2.8.8 1 1
(d) 4 1 1
(e) 1. Have nucleus and the correct number of atomic shell. 1
2. Electron number correctly plot on each of the shells. 1
o
2
(f)(i) proton 1
(ii) isotope 1
(iii) 3 1 3
JUMLAH 9
2. Figure 1 shows an experiment to investigate the diffusion process.
Gas jar
After several hours Purple
coloured gas
Solid iodine
FIGURE 1
(a) State the type of diffusion in this experiment
..........................................................................................................................
[1 mark]

4. (b) Draw the arrangement of the iodine particles in the solid and gaseous state.
Solid Gas
[2 marks]
(c) State the type of particles in gaseous iodine
...........................................................................................................................
[1 mark]
(d) (i) State the change in the matter state of iodine in this experiment.
....................................................................................................................
[1 mark]
(ii) Name the process for the change of states in (d)(i)
....................................................................................................................
.
[1 mark]
(e) Explain, using the kinetic theory of matter, why the purple coloured gas
diffuses faster if the gas jar is immersed in hot water.
.............................................................................................................................
.............................................................................................................................
..
[2 marks]
(f) Normal car perfume placed inside the car will diffuse to give a fragrant smell.
State the heat change undergo by the perfume.
.............................................................................................................................
[1 mark]
JAWAPAN
1(a) Correctly state the type of diffusion

5. Contoh jawapan: Gas 1 1
1(b) Correctly draw particles arrangement
• Particles draw must at least in three row
• Particles are arrange closely.
• Packed orderly in fixed position.
Examples Answer:
Solid 1
[Can draw
• At least three iodine particles
• Iodine particles are separated from one another]
Gas
1
2
1(c) [Correctly state the type of particles]
Example answer:
Molekul 1
1
1(d)(i) [Correctly state the change of the state of matter]
Contoh jawapan:
Pepejal kepada gas/ Pepejal gas 1
1
1(d)(ii) [Spell correctly the process]
Contoh jawapan:
Sublimation 1 1
1(e) [Explain thoroughly
• Heat change
• Kinetic energy change
By the iodine particles]
Contoh jawapan:

6. Iodine particles get heat/ energy and 1
Kinetic energy of iodine particles increase/ iodine particles
move randomly and rapidly. 1 2
1(f) [Correctly state the change in heat ]
Contoh jawapan:
Heat diffused/ Endotermik 1
1
9

7. ESSAY QUESTION