Question

CLASS 9TH.SCI.MATTER IN OUR SURROUNDINGS​

Answer 1

Answer:

with increase in temperature process of evaporation of food particles increases , it spreads quickly so hot foods smell reaches our nose from far off place also

whearas in cold food temperature is low so less evaporation of gaseous particles takes place therefore less particles in the room and we have to smell it from proximity (closeness)

or

other reason maybe dissolution of gas in solution is inversely proportional to temperature of solution

Answer 2

particles of hot food has more kinetic energy than the particles of cold food . Due to more energy they can travel easily through the air very fast and can be reached several metres away.

But the particles of cold food are very low and the tendency to travel is very less so to get the smell of cold food we need to go close to the food

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