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WorksheetsHABA PENDAM TENTU / SPECIFIC LATENT HEAT
Total questions: 10
Worksheet time: 5mins
Latent heat is ‘hidden’ because it..
cannot be measured
increase the temperature during change of phase of substance
is a form of internal kinetic energy
is used to overcome the attractive forces between the molecules
Specific latent heat is measured in..
J oC-1
J kg-1 oC-1
J kg-1
J kg oC-1
Graf suhu-masa berikut adalah bagi satu bahan Y yang dipanaskan. Apakah yang berlaku di QR?
Bahan Y sedang dipanaskan
Bahan Y mendidih pada takat didihnya
Bahan Y sedang cair pada takat leburnya
Bahan Y mengalami perubahan kimia
Haba pendam tentu pelakuran ialah haba yang diperlukan untuk..
Mengubah 1 kg ais kepada air pada 0 ⁰C
Mengubah 1 kg air kepada stim pada 100 ⁰C
Mengubah suhu 1 kg ais sebanyak 1 ⁰C
Mengubah suhu 1 kg air sebanyak 1 ⁰C
There is no rise in temperature when heat is supplied to melt ice. Which of the following explains this observation?
The heat is used to exert pressure on molecules
The heat is used to increase the vibrations of molecules
The heat is used to increase the kinetic energy of molecules
The heat is used to overcome the attractive forces between molecules
Minuman boleh disejukkan dengan menambahkan ketulan ais. Apabila ais cair..
Haba yang sangat besar diserap daripada minuman dan merendahkan suhu minuman
Haba yang sangat besar dibebaskan dan merendahkan suhu minuman
Tenaga kinetik molekul-molekul air bertambah
perubahan kimia berlaku ke atas ais
Rajah menunjukkan lengkuk penyejukan suatu bahan. Pada peringkat manakah haba pendam tentu dibebaskan?
VW dan XY
WX dan YZ
VW dan YZ
WX dan XY
Rajah 15 menunjukkan proses perubahan fasa. Antara proses A, B, C atau D, yang manakah haba pendam pengewapan diserap?
A
B
C
D
1 cm3 of ethanol and 1 cm3 of water are poured onto a table. Ethanol evaporates faster compared to water because..
the density of ethanol is lower than the density of water
the mass of ethanol is smaller than the mass of water
the specific latent heat of ethanol is lower than the specific latent heat of water
the specific heat capacity of ethanol is lower than the specific heat capacity of water
Diagram shows a heating curve of a liquid. Which statement explains what happens in section QR?
Latent heat of fusion is absorbed
No heat is absorbed by the liquid
Kinetic energy of the molecules increases
The liquid experiences a phase change from liquid to gas
