Question

the smell of hot sizzling food reaches to you several meters away. list two properties of particle of matter responsible for this observation and explain this observation.

Answer 1

The smell of hot sizzling food reaches is from a considerable distance but to get the smell of cold food we have to go close to it beacuse due to fact that the rate of diffusion of hot gases is much faster than the rate of diffusion of cold gases.

Answer 2

When molecules of some volatile substances from hot sizzling food diffuse into air and reach the odur sensitive part of our nose we have the perception of smell.

At higher temperature of molecules diffuse into air at a faster rate and therefore travel long distances.

Hence the smell of hot sizzling food reaches as quickly even when we are several metres away.

While on the contrary , when the food is called the vapour diffuse is at a slower rate and therefore does not travel longer distances.

So, one has to come closer to have the perception of smell.