Question

Gwe reasons for the following
obseruation:
The smell of hot sizzling food
reaches you several metres
away, but to get the smell from
cold food you have to go close​

Answer 1

Explanation:

It is so because, the particles of hot sizzling food are moving continuously in the air and they diffuse rapidly in the air . But , the particles of cold food are not continuously moving. So, they don't diffuse rapidly in the air.

So , we get the smell of hot sizzling food from several metres away but not so cold food.

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ALTERNATIVE ANSWER :-

It is so because , the particles of the hot sizzling food are moving continuously. This increases the temperature. As a result , the particles start moving more fast. So , as a result , the diffusion rate also increases. So , that is why, the smell of the hot sizzling food reaches us several metres away but not so the cold food.

Answer 2

When food is hot, diffusion is more. But in cold food diffusion is slow. Hence to get the smell from cold food we have to go close.