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初中化学是学生学习化学的启蒙阶段。教师要根据化学课的特点,有目的、有计划地培养和发展学生的观察能力、实验能力、思维能力和自学能力。在化学教学过程中加强对学生化学思维能力的培养,是提高化学教学质量的关键。根据化学课的特点,结合多年的经验,谈谈自己的做法。 一、由表及里抓实质 初中化学课本的《绪言》中讲述了两个重要的概念:“物理变化”和“化学变化”。在化学变化中常伴有发光、发热、变色、产生气体、生成沉淀等现象,这让学生掌握了一些感性知识。但判断一种变化是否属于化学变化,还必
Junior high school chemistry is the initiation stage for students to study chemistry. According to the characteristics of chemistry classes, teachers should purposefully and systematically develop and develop students’ observational, experimental, and thinking abilities and self-study ability. To strengthen the cultivation of students’ chemistry thinking ability in chemistry teaching is the key to improving the quality of chemistry teaching. According to the characteristics of chemistry class, combined with years of experience, talk about your own practice. First, grasp the essence from the table and in the junior high school chemistry textbook “Introduction” describes two important concepts: “physical changes” and “chemical changes.” Chemical changes often accompanied by light, heat, discoloration, gas, precipitation and other phenomena, which allows students to master some of the emotional knowledge. But to judge whether a change is a chemical change, it must be