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化学概念不是一成不变的,随着科学技术的进步,人类对客观世界的认识日益深入,使得化学概念的内涵更加丰富,外延更加扩大,在学习的过程中,不断出现相似的、相关的概念,为准确把握概念,常常需要用比较的方法,以下通过三组物质结构中的概念,谈谈比较的方法.一、原子团、根、基、官能团某些相关概念,在教材中分散出现,在教学中往往忽视它们的异同,例如原子团、根、基、官能团同是物质分子的一部分,它们有什么区别和联系呢?
The concept of chemistry is not static. With the progress of science and technology, people’s understanding of the objective world is deepening. This has led to the enrichment of the concept of chemistry and the extension of its extension. In the process of learning, similar and related concepts are constantly emerging. Accurate grasp of the concept, often need to use comparative methods, the following three groups by the concept of material structure to talk about the comparative method.A, radicals, radicals, radicals, functional groups of some related concepts, scattered in teaching materials, in teaching Their similarities and differences are often overlooked. For example, atomic groups, radicals, radicals and functional groups are part of the material elements. What is the difference and connection between them?