Endothermic Definition and 55 Threads

Dr. Schambaugh, of the University of Oklahoma School of Chemical Engineering, Final Exam question for May of 1997. Dr. Schambaugh is known for asking questions such as, "why do airplanes fly?" on his final exams. His one and only final exam question in May 1997 for his Momentum, Heat and Mass...

How can you tell when a reaction is endo or exothermic? From what i understand there are two ways to know: 1) if the enthaply(change in H) is greater than 0, it's endothermic. If the change in H is lower than 0, its exothermic. 2) Also,when the chemical bonds of the reactant molecules are...

If we have to use a match to start a reaction, is it endothermic? I have searched for the answer in my book, wasted about 3 hours but to no avail. Anyone?

Could anyone give me a few examples of endothermic fusion reactions between elements solid at room temperature?

Are there any endothermic reactions that can release the converted heat energy as electricty? How do they work? I wonder if it is possible to create something that will convert heat to electricty all the way down to refridgerator temps... they you got your personal power generator and a...