用自制器材做化学实验固原县五中刘继宗在贫困山区的乡下中学，化学实验室简陋，药品器皿短缺。要完成大纲和教材所要求的实验内容，有必要自制和改进实验器材。下面是我自制和改进的部分实验器材。氢气制备和氢气还原氧化铜的实验改进１．氢气制备。（１）所需仪器的制备... Chemical experiment with self-made equipment Liu Guzong, a five-in-law in Guyuan County, was in a rural middle school in a poverty-stricken mountainous area. The chemical laboratory was simple and there were shortages of medicine utensils. To complete the experimental content required by the outline and the teaching materials, it is necessary to make and improve experimental equipment. Here are some of the experimental equipment that I made and improved. Experimental Improvements in Hydrogen Preparation and Hydrogen Reduction of Copper Oxide Hydrogen production. (1) Preparation of required instruments...