solid,liquid or gas, molecules gain kinetic energy when heated. why? please explain in details. what are the incidents in the molecular or atomic level occur which cause the gain of kinetic energy?


closed as too broad by John Rennie, Kyle Kanos, Jon Custer, rob Jan 11 '17 at 16:09

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  • $\begingroup$ Have you read this article in wiki ? en.wikipedia.org/wiki/Statistical_mechanics $\endgroup$ – anna v Jan 10 '17 at 19:58
  • $\begingroup$ They don't gain kinetic energy when heated. The heat gained is the additional kinetic energy. The additional kinetic energy isn't a byproduct of heating; it is the heating. $\endgroup$ – Paul Jan 10 '17 at 20:05