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苏教版《实验化学选修》专题3火柴头中硫元素的检验实验,采用教材的实验方案,操作繁琐,现象不明显,还会产生大量的有毒气体二氧化硫。通过对实验装置进行改进,使实验装置微型化,使药品用量大大减少,操作简单,现象明显。
Su Jiao Ban “Experimental Chemistry Elective” Topic 3 sulfur head sulfur in the test, the use of experimental materials program, cumbersome operation, the phenomenon is not obvious, but also produce a lot of toxic gas sulfur dioxide. Through the improvement of the experimental device, the miniaturization of the experimental device makes the dosage of the drug greatly reduced, and the operation is simple and the phenomenon is obvious.