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正确理解和运用化学概念是学好化学的基础和关键。臬才能学好化学概念呢?下面介绍几种方法,供同学们参考。一.剖析法化学概念是用简明、精辟的语言高度概括出来的,概念中的每一个字、词都有一定的内涵。剖析概念中关键的字、词,弄清其含义。了解概念的各个组成部分的作用,可以抓住概念的本质特征,便于理解、记忆和运用。例如“催化剂”概念,(1)抓住“改变”两字(有加快和减慢之意),(2)以反应前后为条件,催化剂的质量和化学性质没有改变,(3)明确“剂”的意思(指一种物质)。又如“氧化反应”概念,有些同学误认为氧化反应是物质跟氧气发生的反应,而忽略了物质与化合
Correct understanding and use of chemical concepts are the foundation and key to learning chemistry. How can you learn the chemistry concept? Here are some methods for students to refer to. I. Analytical chemistry The concept of chemistry is highly summarized in concise, incisive language. Every word and word in the concept has a certain connotation. Analyze the key words and words in the concept and clarify its meaning. Understanding the role of the various components of the concept can capture the essential characteristics of the concept and make it easier to understand, remember and apply. For example, the concept of “catalyst”, (1) grasping the word “change” (with the intention of speeding up and slowing down), (2) with the conditions before and after the reaction, the quality and chemical properties of the catalyst have not changed, (3) ) The meaning of “agent” (refers to a substance). Another example is the “oxidation reaction” concept. Some students mistakenly believe that the oxidation reaction is the reaction of a substance with oxygen, and ignores the combination of substances and compounds.