MISUNDERSTANDINGS OF EXTENSIVE QUANTITIES IN PHYSICS TEXTBOOKS

Conservation and non-conservation are two aspects of extensive quantities. Current physics textbooks deal with conservation and non-conservation in some ways that, unfortunately, lead to misunderstandings of extensive quantities. In this paper, we will discuss and explain how this is inappropriate or obsolete and we will make some suggestions for teaching conservation and non-conservation of extensive quantities and finally give a clear and simple formulation for each extensive quantity.