Question

The smell of hot sizzling food reaches you several meters away, but to get the smell from cold food, we have to go close. Why?

Answer 1

i. The gas molecules from the hot sizzling food mix with air easily as these molecules have a lot of energy. Hence, the smell of hot sizzling food spread around in all the directions and reaches several meters away.

ii. But the gas molecules from cold food cannot mix easily with air as these molecules have low energy due to its low temperature.

Hence, we have to go close to get the smell from cold food.