化学是一门以实验为基础的学科。课堂教学中,演示实验是课堂教学的重要组成部分,它不仅直观、容易理解、说服力强,而且可以调动学生积极思维,激发学生的学习兴趣。现行普通高中课程标准实验教科书《化学(必修2)》在讲述乙醇性质时,提到了酒后驾驶检测仪,这部分内容没有演示实验,不仅教师讲授觉得空洞,学生也很难理解。为了满足教学上的需要,我们自制了简易的酒后驾驶检测仪。 Chemistry is an experiment-based discipline. In classroom teaching, demonstration experiment is an important part of classroom teaching. It is not only intuitive, easy to understand and convincing, but also can mobilize students ’positive thinking and stimulate students’ interest in learning. The current general high school curriculum standard experimental textbook “Chemistry (compulsory 2)” about the nature of ethanol, referred to the drunk driving detector, this part of the content is not demonstrated experiment, not only teachers think empty, students are difficult to understand. In order to meet the teaching needs, we made a simple drink driving test instrument.