中学化学教学的一个重要任务是培养学生的能力，思维能力是中学化学教学要求的核心，它与观察能力、实验能力、自学能力密切相关。观察过程中没有思维活动的参与，观察主体是无法将感性认识转化为理性认识的。做实验必须手脑并用，不假思索的机械操作是不可能提高实验水平的。? The important task of chemistry teaching in middle school is to cultivate students’ abilities. The ability of thinking is the core of the requirements of chemistry teaching in middle schools. It is closely related to observation ability, experimental ability and self-learning ability. In the observation process, there is no participation of thinking activities, and the observing subject cannot transform perceptual knowledge into rational knowledge. Experiments must be carried out by hand and brain. It is impossible to improve the experimental level without thinking about mechanical operations. ?