If someone were to light a cigar at one end of a closed room,persons at the other end of the room might soon perceive an odor due to gaseous emissions from the cigar.Such a phenomenon is an example of:

Question

Quizplus · Accepted Answer

This is an example of diffusion. Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration due to random motion. In this case, the particles from the cigar are moving from an area of higher concentration (near the cigar) to an area of lower concentration (the other end of the room) until the concentration is equalized throughout the room.

If Someone Were to Light a Cigar at One End