Teaching Avogadro's Hypothesis and Helping Students To See the World Differently

摘要

To prime the reader for what is to come in this article, she or he is requested to consider the following scenario: You walk into a chemistry classroom and there are two balloons tied to separate ring stands-a red balloon labeled "hydrogen" and a yellow balloon labeled "oxygen" The balloons have been inflated to the ; exact same size (i.e., have the same volume). With that scenario visualized, the reader is now asked to respond to the following question: Given that the two balloons are in the same room (i.e., are at the same temperature and pressure) and are filled to the same volume with their respective gases, what is true of the number of molecules in the hydrogen balloon compared to the number in the oxygen balloon.