Question

22. When the temperature of a substance is lowered, its particle
a) Escape the attractive force of the other particles.
more slowly.
b) vibrate more slowly.
c) Stop vibrating completely.
d) vibrate more quickly​

Answer 1

Answer:

(d) vibrat e more quickly

Answer 2

When the temperature of a substance is lowered, its particle vibrates more slowly.

• The Entropy of a particle is affected by temperature.
• Entropy is defined as the state of disorder or randomness.
• Increasing the temperature increases the kinetic energy of particles as velocity increases with an increase in temperature and Kinetic energy = 1/2 mv² ( m =mass of the particle, v = velocity).
• Therefore, on decreasing the temperature, the entropy or the random motion of the particle decreases.
• Hence, the particle vibrates more slowly. The Vibrational energy of the particle decreases.