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《化学变化伴随的现象》是《物质的变化》单元中的第六课,本课由两部分组成:一是“观察硫酸铜溶液与铁钉的反应”;二是“初步归纳化学变化伴随的现象”。在本课的学习中,学生要分辨现象与证据的关系,体会证据支持结果的重要性;认识到化学变化会伴随各种现象,根据这些现象可以初步判断物质是否发生了化学变化;认识到硫酸铜溶液和铁钉会发生化学反应,产生新的物质。科学是一门以实验为基础的学科,《科学(3---6年级)
The phenomenon accompanied by chemical changes is the sixth lesson in the unit of material changes. The lesson consists of two parts: one is the observation of the reaction of copper sulfate solution and the nails; the other is the initial induction of chemistry Change accompanied by the phenomenon ". In this lesson, students should distinguish between the phenomenon and the evidence, understand the importance of evidence support results; recognize the chemical changes will be accompanied by a variety of phenomena, based on these phenomena can be initially judged whether the material has undergone chemical changes; recognize the sulfuric acid Copper solution and nail will be chemical reaction, the new material. Science is an experiment-based discipline, Science (grades 3-6)