在化学科学中许多重要定律的发现,都是通过实验然后综合、分析、概括的结果。实验必须有相当的技巧,才能保证实验结果的正确。例如大家都知道的“物质不灭定律”,在罗蒙诺索夫之先,已经有许多科学家在这方面化去了毕生的精力,但并没有提出这个定律来,直到罗蒙诺索夫时代,这个定律才确定下来,这固然有许多客观的原因,然而对实验技术的掌握与运用,显然是一个很重要的因素。往往有这样的事实,用同样的方法做同样内容的实验,由于实验技巧的熟练程度不同,会得出不同甚至相反的结果。但是所谓技巧,也不是什么神秘的东西,主要是从最基本的实验操作开始,按照一定的法则和要求去学习,经过辛勤劳动,一点一滴地积累出来的,对于初学化学的人来说,更应该强调按照一定的法则去学习。古人说:“公输子之 The discovery of many important laws in chemical science is the result of generalization, analysis and generalization through experiments. Experiments must have considerable skill to ensure that the experimental results are correct. For example, as we all know, “the laws of material immortality”, many of Lomonosov's scientists have gone through their life-long energies in this respect. However, this law has not been proposed until the Lomonosov era , This law was confirmed, of course, there are many objective reasons, however, mastery and use of experimental techniques, is clearly a very important factor. Often there is the fact that doing the same experiment in the same way can produce different or even opposite results due to different proficiency in experimental skills. But the so-called skills, is not what the mysterious thing, mainly from the most basic experimental operation, according to certain rules and requirements to learn, through hard work, little by little accumulated, for beginner chemistry people , But should also emphasize in accordance with certain rules to learn. The ancients said: "Public transport of children