Kinetic energy of molecules _______ with decrease in temperature.

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Solution

Definition of matter
Matter is made up of very small particles called atoms. Atoms are the building blocks of matter.
According to kinetic theory of matter, all matter exist in three states-solid, liquid and gas
The particles of matter are always in constant random motion and collide with other particles.
As a result of these inter-particle collisions, they possess kinetic energy.
Kinetic energy of the particles increases with an increase in temperature and decreases with a decrease in temperature.
Hence, Kinetic energy of molecules decreases with decrease in temperature.

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