Hello Everyone, The question I am about to pose concerns something I may possibly already have an answer; however, I would like to proceed with posing the query, that I might solidify my understanding. If a system transfers heat to its environment, does this necessarily imply that the system's temperature must reduce, or is just sufficient for that occurring? It would seem as though it were a necessary cause. Heat is defined as the spontaneous flow of energy from one object to another. So, if heat were flowing from the system, then the system's energy must be decreasing. Because temperature is a measure of the average energy, then if the energy is decreasing, then a decrease in temperature should be measured. Does this sound reasonable; am I missing anything?