Give reasons for the following observation:
The smell of hot sizzling food several meters away, but to get the smell from cold food you have to go close.
Particles of hot food have more kinetic energy than the particles of cold food. Due to more energy they can travel easily or diffuse through the air very fast and can be reached several meters away.
But the particles of cold food are low in energy and the tendency to travel is very less so to get the smell from cold food we need to go close to the food.