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一、案例背景钠的性质是本章内容的重点之一,是中学化学重要的基础知识,也是学生今后在工作、生活中经常要接触,需要了解和应用的基础知识。通过钠的性质学习,可以加深巩固金属与非金属、酸、水的知识,并为前面两章所学的实验和理论知识补充感性认识的材料,为钠的重要化合物的学习奠定基础,还可以为在必修2中学习物质机构、元素周期律、化学反应与能量等理论知识打下重要的基础。故本节教材具有承上启下的作用。本节以学生
I. Case Background The nature of sodium is one of the focuses of this chapter. It is an important basic knowledge of chemistry in secondary schools. It is also the basic knowledge that students need to understand and apply frequently in their daily work and life. Through the study of the nature of sodium, knowledge of the consolidation of metals and non-metals, acids, and water can be deepened, and perceptual knowledge of the experimental and theoretical knowledge learned in the previous two chapters can be supplemented, laying the foundations for the study of important compounds of sodium, In compulsory 2 to learn the material institutions, the periodic law of the law, chemical reaction and energy and other theoretical knowledge to lay an important foundation. Therefore, this textbook has the function of connecting. This section is for students