Question

Compare endothermic and exothermic reactions in terms of potential energy, heat flow, and observed temperature changes. Explanations helpful.

Answer 1

This is a very important concept in chemistry. You can read about it in your book. If you don't own a chemistry book, read about it here: http://finedrafts.com/files/CUNY/chemistry/General/Zumdahl%20etal/Atoms%20First%20Approach/Ch06%20Chemical%20Energy.pdf

It's too large of a topic to discuss and condense into this chat box.