一、氨制取实验的改进1.教材中实验的不足对于人教版新课标高中化学教材中氨的制取实验,我们经反复实验后,发现其存在以下不足:反应容器大试管易破裂,收集氨气时,使用棉花团可防止空气对流,但排出空气的同时也会有氨气逸出,污染环境。2.实验改进(1)实验步骤。 First, the ammonia system to improve the experiment 1. Insufficient experimental teaching materials For the new version of the PEP teaching material in high school chemistry ammonia preparation experiment, after repeated experiments, we found the following shortcomings: Large reaction tube easy to crack the tube , The collection of ammonia, the use of cotton bolls to prevent air convection, but the discharge of air there will be ammonia escape, polluting the environment. 2. Experimental Improvement (1) experimental steps.