论文部分内容阅读
概念在化学教学中具有举足轻重的作用,只有首先弄懂相关化学概念,然后才谈得上对其他化学知识的学习。下面我就平时教学中,学生容易误解的几个概念谈谈自己的理解。一、化学变化物质世界是可以无限细分的,化学的研究范围主要是把物质分到原子级别,即原子是化学变化中的最小微粒,分子是保持物质化学性质的最小微粒,所以,化学变化的本质是反应
The concept plays a pivotal role in chemistry teaching. Only by first understanding the relevant chemical concepts, can we learn to learn about other chemistry knowledge. Now I will talk about my own understanding of several concepts that students easily misunderstand in ordinary teaching. First, the chemical change The world of matter can be infinitely subdivided. The scope of chemical research is mainly to classify matter into atomic levels, that is, atoms are the smallest particles in chemical changes, and molecules are the smallest particles that maintain the chemical properties of substances. Therefore, chemical changes The essence is the reaction