在化学课教学中,化学实验处于非常重要的地位,实验具有直观性,符合中学生的认识特征,容易吸引学生。实验对学生的要求非常严格,更容易培养学生严谨的科学态度。一个好的实验,不仅能够培养学生的观察能力、思维能力、综合分析问题和解决问题的能力,更重要的是能够培养学生从错综复杂的实际问题中抓住主要矛盾并 In chemistry teaching, chemical experiments are very important, experiments are intuitive, in line with the cognitive characteristics of middle school students, easy to attract students. Experiments on the requirements of students is very strict, more easily develop students rigorous scientific attitude. A good experiment can not only cultivate students' ability of observation, thinking, comprehensive analysis and problem solving, but more importantly, students can grasp the main contradictions from the complicated practical problems