Give reasons for the following observation: The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close. Why?

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

Reason

Kinetic Energy

  • Particles of hot sizzling food possess large kinetic energy and diffuse in air rapidly and reach several metres away.
  • Particles of cold food possess less kinetic energy and are not able to reach several metres away.

Temperature

Particles of matter possess kinetic energy and keep moving constantly.

  • At lower temperature, particles have low kinetic energy and thus move slowly. Particles in cold food have low kinetic energy due to low temperature.
  • At higher temperature, particles have high kinetic energy and move faster hence, the particles of hot vapours from hot food move faster.

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.

4 Comments

  1. Thanks for the answer . The concepts are so clear . I love it .

  2. Thanks mam

  3. Thank you Byjus team. You have clearly explained my doubts. Now I can easily write in my project. And I can also answer my teacher’s question. Love you Byjus app👍

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