验证“牺牲阳极法”的教学实验改进

Improvement of Teaching Experiment to Verify“Sacrificial Anode Method”

根据化学学科核心素养下对化学实验的要求,对人教版教材中“验证牺牲阳极法”实验提出一种改进实验方案。采用被隔成2个区域的废弃饭盒作反应容器,采用镁条作阳极金属,可以实现反应进行与结束的可控化、对照效果的可视化和操作的简便化。该套改进实验装置既适用于演示实验,也适用于学生分组实验对牺牲阳极法的应用效果进行探究,进而掌握科学探究的方法。

According to the requirements for chemical experiments under the core literacy of chemistry,an improved experiment program was proposed for the experiment of“Verification of Sacrificial Anode Method”in the textbook of People’s Education Edition.A discarded lunch box divided into two areas was used as the reaction container and the magnesium strip was used as the anode electrode metal to realize the controllability of the progress and end of the reaction,the visualization of the comparison effect,and the simplification of operation.This improved experiment program is not only suitable for teachers’demonstration experiments,but also for students’group experiments to explore the application effects of sacrificial anode method,so as to master the method of scientific exploration.