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一、问题提出电解饱和食盐水实验是高中阶段非常重要的实验。该实验按传统方法演示有一定难度,因此不少教师首选视频教学。也有教师用滤纸或试纸为载体,对以上实验进行微型化改进,实验虽然取得了较为满意的效果,但由于载体的单一性,实验还有较大的改进空间。二、实验改进1.实验药品及仪器pH试纸、淀粉-KI试纸、滤纸、标准比色卡、饱和食盐水。
First, the issue put forward electrolysis saturated salt water experiment is a very important experiment in high school. The experiment demonstrates a certain degree of difficulty according to the traditional method, so many teachers prefer video teaching. There are also teachers using filter paper or test paper as a carrier, to miniaturize the above experiment to improve, although the experiment has achieved satisfactory results, but due to the carrier’s unity, the experiment there is still much room for improvement. Second, the experimental improvements 1. Experimental drugs and equipment pH test strips, starch -KI test strips, filter paper, the standard colorimetric card, saturated saline.