Question

when an incense stick is lighted in one corner of a room its fragments spreads in the whole room quickly which characteristic of the particles of matter in illustrated by this observation

Answer 1

As we light incense stick in one corner of a room, its fragrance spreads in the whole room quickly. The reason behind this is the property of diffusion in gasses.

When an incense stick is burned, the particles of the gas produced move quickly in all directions.

Due to the diffusion of smoke in the air, the particles collide with particles in air mixing with it to reach every corner of the room quickly.