Multiple choice

The smell of hot sizzling food reaches several metres away because hot food has

  1. greater number of particles in their vapour state

  2. higher kinetic energy of the particles

  3. particles that are divided into smaller fragments

  4. greater force of attraction among particles in their vapour state
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The particles of matter possess kinetic energy and thus, are constantly moving. Kinetic energy of particles is directly proportional to the temperature. The temperature of hot food is more, so the particles of hot vapours coming out of hot sizzling food have higher kinetic energy, i.e. they move faster and hence, the smell of hot sizzling food reaches several metres away. Moreover, the particles in vapour state do not have forces of attraction and they can easily move.

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