Question

What happens when we increase the temperature of a substance?

• A. Kinetic energy of the molecules increases
• B. Molecules becomes stationary
• C. Kinetic energy of the molecules decreases
• D. Molecules starts to move in a particular direction

Answer 1

The correct option is A Kinetic energy of the molecules increases

When we increase the temperature of a substance, the molecules of the substance starts to vibrate more faster. As a result of which kinetic energy of the molecules increases.
Therefore on increasing the temperature of a substance, the kinetic energy of the molecules increases.