DIFFUSION
Tak susah pun topik ni...tapi ramai students misconcept / cuai / confused (keliru) ... lebih teruk lagi tak paham soalan untuk jawab soalan tentang part ni.
Konsep Asas - kita kena paham konsep "pergerakan zarah"(particles movement) dan "ruang"(space).
What is Diffusion ? [ Apa itu proses resapan]
Situation I
Pada waktu tengahari sedang anda melayan facebook di bilik bacaan. Anda terhidu sesuatu bau di bilik anda.. Berbau wangi, sedap menusuk hidung sehingga berbunyi perut anda kerana lapar. Bau tersebut datangnya dari dapur, bau masakan kari kepala ikan...Mak yang masak.
Adakah anda sedari proses resapan (diffusion process) berlaku dalam situasi di atas?
" Bau masakan kari di dapur merebak hingga ke bilik bacaan"
"The smell of curry cooking in the kitchen spreads to the study room"
Smell travel in the air by diffusion process. Molecules move randomly and freely in the air. Remember, molecules always moving, some molecules leave the curry as it is cooking. Molecules released when curry heated over.
These tiny molecules of curry travel through the air throughout the house-study room to our noses. If the wind is blowing, there will be more mixing of the molecules in the air, and molecules of curry can travel farther apart to other places. The molecules move randomly "from concentrated area(region) to less concentrated area(region)".
REMEMBER : Molecules* move randomly/freely from high concentrated region to low concentrated region.
* Air molecules
INGATLAH : Molekul bergerak secara rawak dan bebas dari kawasan berkepekatan tinggi ke kawasan berkepekatan rendah.
JOIN DISCUSSION : ANY QUESTIONS?
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