在人类认识物质世界的进程中,对元素及其化合物性质的研究,对未知元素的探索,曾经存在一定的盲目性。随着生产的发展、科学实验的深入,门得列耶夫(1834—1907)在前人工作和他自己实践的基础上,发现了元素周期律。从此,元素的研究工作,新元素的探索,新物质、新材料的寻找,有了一个可遵循的规律。随着对元素周期律认识的不断深入和发展,人们运用这一规律在认识和改造自然的斗争中发挥着越来越大的作用。周期律的发现进一步从自然科学上论证了辩证唯物主义的意义。周期律揭示了元素由量变过渡到质变、量和质是相互关联的实质,驳斥了把事物的发展看成只有量变没有质变的机械论的自然观,以及否认自然界中相互联系和相互转化的形而上学的自然观。周期律的发现是辩证唯物主义的伟大胜利。在自然科学史上,在文教战线上,始终存在着两个阶级、两条路线、两种思想的斗争。资产阶级学者总是极力宣扬“天才创造科学”、“头脑里出科学”。他们把 In the process of human understanding of the material world, the study of the nature of elements and their compounds, the exploration of unknown elements, there has been some blindness. With the development of production and the deepening of scientific experiments, Medeeyev (1834-1907) discovered the periodic law of the elements on the basis of previous work and his own practice. Since then, the research of elements, the exploration of new elements, the search of new materials and new materials have a law to follow. With the deepening and development of understanding of the periodic law of the elements, people play an increasingly important role in the struggle to recognize and transform nature. The discovery of the periodic law further demonstrates the significance of dialectical materialism from the natural sciences. The periodic law reveals that the element transition from quantitative change to qualitative change, and the quantity and the quality are the interrelated essences. It refutes the view of nature that views things as the mechanical theory of nature with only quantitative changes and no qualitative changes, as well as the metaphysics denying the interconnectedness and mutual transformation in nature The concept of nature. The discovery of the periodic law is a great victory of dialectical materialism. In the history of natural sciences, there has always been a struggle between two classes, two lines and two ideologies on the cultural and educational front. Bourgeois scholars always strongly advocate “genius to create science” and “mind out of science.” They put it