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在中学的理科里我尤其偏爱化学,当初中老师为我们演示第一个实验的时候,我就被化学的奇妙深深吸引了!初中的化学对我来说很简单,不用老师催,我就会把所有该看的该做的都早早地完成。但到了高中,我发现化学开始变得深奥难懂了,而且高中的学习进度比初中快得多,很多东西还没消化就又有新知识了。再加上高中化学的方程式明显比初中的多很多,还有好多反应失去了初中时掌握的反应规律,比如高一Cl_2的实验室制法,Cl_2与水、碱的反应。NaCl与浓硫酸微热与强热制氯化氢反应的不同情况等,我觉得难以理解。就在烦心的时
In the science of middle school, I particularly like chemistry. When the junior high school teacher demonstrated the first experiment for us, I was attracted by the wonderful chemistry. The chemistry of junior high school is very simple to me. It will complete all the things that should be done early. But in high school, I discovered that chemistry began to become esoteric and difficult to understand, and that the progress of high school learning was much faster than junior high school. Many things had not yet been digested and there was new knowledge. In addition, the formula of high school chemistry is obviously much larger than that of junior high school, and there are many reactions that have lost the reaction rules mastered in junior high school, such as the laboratory method of high-Cl 2 , and the reaction of Cl 2 with water and alkali. I think it is difficult to understand the different conditions of the reaction between NaCl and concentrated sulfuric acid slightly hot and strong hydrogen chloride. It’s just annoying