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一、教材和学情分析“镁的提取及应用”选自化学1专题2“从海水中获得的化学物质”中的第二单元,本节课以海水资源为背景,在“工业生产—性质探究—社会应用”的线索下,首先从海水中提取镁开始让学生了解工业上制取镁的步骤,然后通过实验探究完成镁的性质的学习,最后归纳出金属镁用途。在镁的制取中对离子反应方程式的书写进行了巩固,在镁的性质学习中,从原子最外层电子入手,结合氧化还原反应原理,介
First, the textbook and academic analysis “Magnesium extraction and application ” is selected from the first unit of Chemistry 1 “2” chemical substances obtained from seawater “in the second unit, this lesson is based on seawater resources in the ”Industrial production - the nature of exploration - social applications," the clue, first of all, from the seawater extraction of magnesium began to allow students to understand the industrial process of magnesium, magnesium and then through the study to explore the nature of the study, and finally concluded the use of magnesium metal . In the preparation of magnesium ionic reaction equation writing has been consolidated in the study of the nature of magnesium from the atomic outermost electronic start with the redox reaction principle,