In cooked food, the particles of matter absorb heat and turn into gaseous state and mix with atmospheric air. So the smell of food reaches our nostrils without our entering the kitchen through air. … When we light an incense stick, its smell reaches our nostrils even if we are away from it.
Why does the smell of cooked food spread?
The smell of food being cooked spreads very fast because of the kinetic energy produced. whenever there is an increase in temperature the kinetic energy also increases causing the particles of matter to move fastly by the process of diffusion.
Why and how does the smell of food travel across the house even though it is being cooked in the kitchen?
The smell of food cooked in the kitchen reaches us even from a considerable distance because the tiny particles of the vapour of food mix with the air and move continuously in all directions. This process is called diffusion.
How does the smell of perfume reach our nostrils even when we are at a distance from its source?
b) We can get the smell of perfume sitting several metres away. … When perfume is sprayed, its particles diffuse into the particles of air at a very fast rate and reach our nostrils. This enables us to smell the perfume from a distance.
Why can we smell hot food from a distance but not cold food?
Answer Expert Verified
We smell hot food from distance because of diffusion process. … As hot food has more temperature , the particles gain Kinetic energy and move with greater speed.
Why can’t we smell cold food?
Due to the leading factors of kinetic energy and temperature the smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.
How do smells travel through the air?
A smell is created when a substance releases molecules (particles) into the air. … Smells travel through the air by a process called diffusion; air particles, and the odour particles within the air, move freely in all directions. They are constantly moving and eventually they spread out through the air around them.
Why does the smell of hot sizzling?
They possess the kinetic energy. As the temperature rises, particles move faster. Thus, particles that carry smell of hot sizzling food move faster than the smell of the cold food. Therefore, the smell of hot sizzling food can reach us several metres away, but to get smell from a cold food you have to go close.
When a bottle of perfume was opened in a room?
When we open a bottle of perfume in a room, we can smell it even from considerable distance. This is because, when the perfume is opened, that gas of the perfume moves from its areas of high concentration to its areas of low concentration. This process is called diffusion.
How the smell of perfume reaches to your nose?
The chemicals in a perfume evaporate easily in the air so that we can smell them. … The strong, sweet smell of perfume reaches your nose so quickly because the chemicals in the perfume evaporate easily in the air so that we can smell them. In addition, the chemical itself can be smelt.
Why can you smell perfumes from a distance?
This is due to the process of diffusion . The particles of perfume diffuse with the air and we get the smell of perfume from a distance. This is possible because the particles of perfume move from the areas of higher concentration to the areas of lower concentration. This process is called diffusion.
Can we smell perfume sitting several Metres away from the source?
When perfume is released it quickly changes into vapour. The kinetic energy of gas molecules is high & the rate of diffusion is high. Hence we can smell the perfume sitting several metres away.
How far can smells travel?
Smell travels at speeds ranging from 1mm to 10cm per second. The slowness and variability are because unlike sound and light smell requires moving mass particles. The “hack” that makes smell work is that heat causes particles to move.
Why do smells of good food diffuse from a bag to your nose?
Smells travel in the air by diffusion. Because molecules are always moving, some molecules leave the bread as it is baking. … These tiny molecules of bread travel through the air throughout the house to our noses.
How fast does a smell travel?
f we assume that the average mass of air (since it is a mixture of different gases) is 28.9 g/mol (or each gas particle is around 4.799*10 -26), and room- temperature is 27C or 300K, we find that the average velocity of a single air particle is around 500 m/s or 1100 miles per hour!