一、创设情境,提出问题在《铵盐氨》中的喷泉实验,这一实验能够很好地囊括氨的大部分的物理性质和化学性质,课堂设计的好的话,这个实验能够引发学生的好奇心理,足以激发学生的兴趣和提出问题的能力。我是这样设计的,提前制取氨气,并将充满氨气的圆底烧瓶密封之后倒置在实验提箱中,和其他已经安装好的实验装置同时展示在学生面前,在演示实验之前,提醒学生注意观察实验的操作和现象,现象一出,学生很惊奇,再次实验并提醒注意观察实验操作顺序,此时学生不只是 First, create the situation, ask questions In the “ammonium ammonia” fountain experiment, this experiment can well cover most of the physical and chemical properties of ammonia, the classroom design is good, this experiment can trigger the students curiosity Psychological, enough to stimulate students’ interest and ability to ask questions. I designed it in such a way that ammonia gas was prepared in advance and the round-bottomed flask filled with ammonia was sealed upside down in the test case, displayed in front of the students along with the other experimental devices already installed, and students were reminded before demonstrating the experiment Attention to observe the operation of the experiment and the phenomenon of a phenomenon, the students were surprised, again experiment and reminded to observe the order of the experimental operation, when the students not only