22. When an inflated balloon experiences a decrease in size, the air pressure inside the balloon remains nearly constant. If there is no transfer of energy by heat to or from the balloon, what physical change takes place in the balloon? a)The average potential energy of the gas particles increases, so the balloon becomes hotter. b)The average potential energy of the gas particles decreases, so the balloon becomes colder c)The average kinetic energy of the gas particles increases, so the balloon becomes hotter.  d)The average kinetic energy of the gas particles decreases, so the balloon becomes colder.

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First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.