三价铁离子和二价铁离子的鉴别与转化的绘画实验

Painting Experiments on Identification and Transformation of Fe^(3+) and Fe^(2+)

以Fe^(3+)、Fe^(2+)的鉴别和转化为例,详细介绍了绘画实验的纸笔与试剂浓度选择、绘画图案设计、微课应用及效果分析,还进行了“铁及其化合物”的一些化学反应。绘画实验突出了化学实验现象的色彩美,一定程度上激发了学生的学习热情,是一种值得尝试的创新实验方式。

Taking the identification and transformation of Fe^(3+)and Fe^(2+)as an example, this paper introduces in detail the selection of paper and pencil and reagent concentrations, painting pattern design, micro-lesson application and effect analysis of painting experiments, and also carries out some chemical reactions of “iron and its compounds”. The painting experiment highlights the color beauty of the chemical experimental phenomenon, stimulates the students’ enthusiasm for learning to a certain extent, and is an innovative experimental method worth trying.