SC-403
Diffusion
Lower Sec Science · Secondary 1 · Medium · Diffusion
A student places a drop of perfume at one corner of a room. After a while, the smell can be detected at the other end of the room. Which statement best explains this observation using the particle model?
- Perfume particles move randomly and spread out to fill the room
- Perfume particles are fixed in position and cannot move
- Air particles pull the perfume particles back to the corner
- Perfume particles only move downwards due to gravity
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