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  • Topic: Atom, Neutron, Ion
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  • Published : February 2, 2012
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Chapter 2: The Structure of the Atom
2.1 Matter
1. Choose the incorrect statement about solids.
Pilih pernyataan yang salah tentang pepejal.
A. The particles are packed closely to each other.
Zarah-zarah adalah tersusun raoat antara satu sama lain B. The particles are highly energized.
Zarah-zarah adalah sangat bertenaga.
C. The intermolecular force are very strong.
Daya antara molekul adalah sangat kuat.
D. The empty spaces in between the particles are very small. Ruang kosong antara zarah-zarah adalah sangat kecil.

2. Which substance is an element?
Bahan manakah adalah unsur?
A. Naphthalene
Naftalena
B. Air
Udara
C. Steam
Stim
D. Carbon
Karbon

3. Diagram 1 shows the graph of temperature against time for the heating of naphthalene. Rajah 1 menunjukkan graf suhu melawan masa bagi pemanasan naftalena.

Why does the temperature remain constant between the time t1 and t2? Mengapakah suhu menjadi tetap di antara masa t1 dengan t2?
A. The surroundings gets cold for a moment
Persekitaran menjadi sejuk buat seketika
B. The Bunsen burner is removed from heating the system
Penunu Bunsen telah dialihkan daripada pemanasan sistem tersebut C. Heat energy is lost to the surroundings
Tenaga haba hilang ke persekitaran
D. Heat energy is used to overcome the intermolecular forces between the naphthalene particles.
Tenaga haba digunakan untuk mengatasi daya antara molekul zarah-zarah naftalena
4. Why are liquids more difficult to be compressed than gases? Mengapakah cecair adalah lebih sukar dimampat berbanding gas? A. The stronger intermolecular forces between liquid particles can prevent the influences of external forces

Daya antara molekul yang lebih kuat antara zarah-zarah cecair mengelakkan pengaruh daya luar.
B. The gas particles are distributed afar from each other Zarah-zarah gas tersebar sangat jauh antara satu sama lain C. The intermolecular forces among gas particles are very weak Daya antara molekul zarah-zarah adalah sangat lemah D. The gas particles can move very freely

Zarah-zarah gas boleh bergerak sangar bebas

5. Which of the following has the weakest intermolecular forces? Antara berikut, yang manakah mempunyai daya antara molekul yang paling lemah? A. IceC. Stone
Ais Batu
B. MercuryD. Water vapour
Merkuri Wap air

6. Which of the following are the evidence for the particles theory of matter? Antara berikut, yang manakah bukti bagi teori zarah jirim?
I Brownian motion
Gerakan Brown
II Changes of matter in different
Perubahan keadaan jirim yang berbeza-beza
III Gas diffusion
Resapan gas
IV Particle motion in liquids and solids
Gerakan zarah-zarah dalam cecair dan pepejal
A. I, II and III only
B. I, II and IV only
C. I, III and IV only
D. I, II, III and IV only

7. The boiling point and freezing point of X is 1560oC and 265oC respectively. X will probably exists as liquid at
Takat didih dan takat beku bagi X ialah 1560oC dan 265oC masing-masing. X mungkin akan wujud dalam keadaan cecair pada
A. 1570oCC. 300oC
B. 264oCD. Room temperature
Suhu bilik 8. Methanol consist of CH3OH molecules. Which of the following occurs when methanol vapourises?
Metanol terdiri daripada molekul-molekul CH3OH. Antara berikut, yang manakah berlaku Apabila metanol mengewap?
A. The intermolecular forces between CH3OH molecules become stronger Daya antara molekul CH3OH menjadi lebih kuat
B. The distance between CH3OH molecules decreases
Jarak antara molekul-molekul CH3OH berkurang
C. The CH3OH molecules become more energetic
Molekul-molekul CH3OH menjadi lebih bertenaga
D. The CH3OH...
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