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化学概念是整个化学知识结构网络的基础,理解掌握化学基本概念是学好化学的前提.如何高效地进行化学概念的教学,是每个化学老师所面临的问题.通过多年的教学实践,笔者认为可从以下几方面做起.一、实验引入概念直观化在初中化学概念中,许多概念是具体的,如硬水、软水、化合反应、置换反应等;但也有不少概念是抽象的,如元素、化合价、原子、分子、离子等.对于具体的概念,学生仅凭形象思维和
The chemical concept is the foundation of the entire chemical knowledge structure network, and it is a prerequisite to learn chemistry well to understand the basic concepts of chemistry.How to teach chemical concepts efficiently is a problem that every chemistry teacher faces.After many years of teaching practice, I believe that First, the experimental concept of the introduction of intuition In the concept of junior high school chemistry, many of the concepts are specific, such as hard water, soft water, chemical reactions, displacement reactions; but there are many concepts are abstract, such as elements, Valence, atom, molecule, ion, etc. For the specific concept, students only think by the image and