理解电子波性的教学探讨

Teaching Design of Understanding the Wave Nature of Electron

波性是原子或分子中电子的重要性质,但结构化学教材对电子波性概念的解释不够详尽。为降低学生在学习该概念时的难度,结合教学实践,尝试将电子波性的物理特征描述为微观环境中电子的运动没有确定的轨迹。通过详细的分析与讨论,多数学生较好地理解了电子波性的物理特征,并认识到正是电子的波性与粒性在不同条件下的转换,才产生了能同时体现出电子波粒二象性的衍射图谱。

The wave nature of electron is not explained in detail in current structural chemistry textbooks although the nature is an important one for the electrons in atoms and molecules.To reduce the learning difficulty of this concept in the teaching practice,we described the physical character of the wave nature of electron as that one cannot predict its future position when it moves in a microscopic system.Our teaching activity suggested that most students can understand the concept properly.Moreover,we found that the class discussions on the concept could help most students to understand that it is both the particle nature and the wave nature of electrons that collectively lead to the result of electron diffraction.