高中化学《物质结构与性质》在高中是选修模块，因为它的内容比较抽象，理论

High school chemistry "Material Structure and Properties" is an elective module in high school, because its content is relatively abstract, theoretical, and difficult to understand, and it is difficult for students to learn [1]. The module "Basics of Organic Chemistry". However, because of the regularity of this part of the proposition in the college entrance examination, it is easier to score than "Basic Organic Chemistry", and it takes less time to answer the questions, which is favored by many candidates. In recent years, more and more schools in Guangxi have included "Material Structure and Nature" as an optional compulsory course, attaching great importance to it. The purpose of this study is to understand the master chemist ’s grasp of the calculation of the number of particles in the calculation of the unit cell, the calculation of the density of the unit cell, and the calculation of the distance between the particles in the "Structure and Properties of Matter", and to understand the reasons for the loss In the above, suggestions are made for teachers 'teaching and students' learning. <br>In this study, the survey method is used to obtain the required data, and the statistical analysis method is used to process and analyze the data. The literature method is also used to find the research of the related unit cell calculation, and the optimized solution is obtained. <br>Judging from the research results, chemist students have a better grasp of the calculation of the number of particles in the unit cell calculation and the calculation of the unit cell density, but there are still some problems; and the mastery of the calculation of the distance between the particles is very optimistic . There are mainly the following problems: First, the space imagination is lacking, and the knowledge of solid geometry is not good. Second, I have not memorized the basic formulas related to cell calculation. Third, the process of calculation and judgment ignores units, and the order of magnitude between unit conversions cannot be remembered.

高中化学《物质结构与性质》在高中是选修模块，因为它的内容比较抽象，理论性强，难以理解，学生学习难度大[1]，过去很多学校不将其列为选修课程，而是修学《有机化学基础》这个模块。但是，因为在高考中，这部分内容命题规律性强，较《有机化学基础》容易得分，答题用时较少，得到许多考生的青睐。近年来，广西越来越多的学校都将《物质结构与性质》列入了选修的必修课程，对其非常的重视。本研究的目的是了解化学师范生对《物质结构与性质》中晶胞计算中微粒个数的计算、晶胞密度的计算以及微粒间距离的计算的掌握情况，了解失分原因，在此基础上，对教师的教学和学生的学习提出建议。<br>本研究运用了调查法来获得所需要的数据，并运用统计分析法对数据进行处理分析，还运用了文献法来查找相关晶胞计算的研究，得出优化解法。<br>从研究结果来看，化学师范生对晶胞计算中微粒个数的计算、晶胞密度的计算的掌握还比较好，但是仍然存在一些问题；而对于微粒间距离的计算的掌握情况十分不乐观。主要有以下几个问题：第一，空间想象能力欠缺，立体几何知识掌握不好。第二，没有熟记有关晶胞计算的基本公式。第三，计算判断的过程忽略单位，且单位换算之间的数量级记不住。

High school chemistry "material structure and nature" is an elective module in high school, because its content is abstract, theoretical, difficult to understand, and students' learning is difficult [1]. In the past, many schools did not list it as an elective course, but studied the "Organic Chemistry Foundation" module. However, because in the college entrance examination, this part of the content proposition regularity is strong, easier to score than "Organic Chemistry Foundation", less time to answer questions, get many candidates' favor. In recent years, more and more schools in Guangxi have included the material structure and nature in the compulsory courses, and attach great importance to it. The purpose of this study is to understand the calculation of the number of particles, the calculation of the density of crystal cells and the calculation of the distance between particles in the calculation of crystal cell in the material structure and properties, and to understand the reasons for the loss of scores. On this basis, suggestions are put forward for teachers' teaching and students' learning.<br>In this study, the survey method is used to obtain the required data, and the statistical analysis method is used to process and analyze the data. In addition, the literature method is used to find out the relevant research of crystal cell calculation, and the optimal solution is obtained.<br>From the results of the study, the chemical normal school students still have a good grasp of the calculation of the number of particles and the density of crystal cells, but there are still some problems; the grasp of the calculation of the distance between particles is not optimistic. The main problems are as follows: first, the ability of space imagination is deficient, and the knowledge of solid geometry is not well mastered. Second, there is no memorization of the basic formula of cell calculation. Third, units are ignored in the process of calculation and judgment, and the order of magnitude between unit conversions cannot be remembered.<br>