化学是一门以实验为基础的学科,在气体的制备实验或气体的性质实验中,都需要检验装置的气密性,最近几年无论是竞赛还是中考都出现了对装置气密性的检验,然而学生对该知识点的掌握缺乏系统性和完备性,只 Chemistry is a discipline based on experiments. In gas preparation experiments or gas nature experiments, the airtightness of devices must be tested. In recent years, both the competition and the mid-term exam have appeared to test the tightness of the device. , However, the students’ lack of systematic and complete knowledge of this knowledge point is only