PH-1714
States of matter
Physics · Secondary 4 · Hard · States of matter
Perfume is sprayed in one corner of a still room. After a short time, people across the room can smell it. Which statement explains this in terms of particles in a gas compared to a liquid?
- Gas particles are fixed in place, so the perfume stays in one corner.
- Gas particles are close together and only vibrate, so the smell spreads slowly.
- Gas particles are far apart and move randomly in all directions, spreading the perfume.
- Gas particles slide past each other but cannot move into empty spaces, so spreading is limited.
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