When a substance is cooled, the kinetic energy of its molecules ……………

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Solution

Heat is a form of energy in transit.
Heat energy always flows from the hot body to the cold body.
A cold body has less temperature and a hot body has a high temperature.
The average kinetic energy of the molecules is directly proportional to the temperature of the body.
Hence, when a substance is cooled, the kinetic energy of its molecules decreases.

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