SC-419
Diffusion
Lower Sec Science · Secondary 1 · Medium · Diffusion
A perfume is sprayed at one corner of a room. After a while, a student at the opposite corner can smell it. Which statement best explains this using diffusion of particles?
- Perfume particles move randomly and spread from high to low concentration through the air
- Air particles carry the perfume particles only downwards due to gravity
- Perfume particles are pulled across the room by the student’s nose
- Perfume particles expand in size until they fill the whole room
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