多年的化学教学,我发现“空气、氧”这一章的知识对于学生学好化学非常重要,它是培养学习兴趣,打好基础的关键.以下几种题型, 对于学生掌握本章的基本知识,突破难点,提高解题速度,培养学生的分析能力和创新能力都很有帮助. For many years of chemistry teaching, I discovered that the chapter “Air, Oxygen” is very important for students to learn about chemistry. It is the key to cultivate interest in learning and lay a good foundation. The following types of questions, for students master the basic knowledge of this chapter, It is helpful to break through the difficulties, improve the speed of problem solving, and cultivate students’ analytical and creative abilities.