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德国化学家温克勒曾经说过:“宇宙间所有的化学变化,好似戏台上扮演的戏剧,一幕一幕的演过去一样。在化学变化的戏剧里,最主要的脚色,当然要推元素了。”元素,对化学工作者来说,是最为熟悉的。初中化学课本中对元素下有简洁而明确的定义,在此要写一篇文章论述它是什么,也许连学生都会认为这是滑稽简单的。可是,许多先辈们过去一直感到它很复杂,致使这个问题的提出到定论经历了两千多年的漫长过程。可见,它并不简一单。最早的元素远在纪元前,许多哲学家认为宇宙间的一切东西都能够分解成一些简单的基本物质。希腊人认为这些简单的物质是水、火、空气和土。我国则有“阴阳五行”说。印度人还提出由“水、土、火、空气、以太、时间、空间、灵魂和感觉等九种东西组成万物的理论。过去许多世纪,人们都公认这些是构成宇宙的元素。
The German chemist Winkler once said: ”All the chemical changes in the universe are like dramas played on a stage. It is the same as the scenes in the past. In the drama of chemical change, the most important role, of course, is to push elements. “Elements are most familiar to chemists. The junior high school chemistry textbook has a concise and clear definition of the elements. To write an article about what it is, maybe even students will think it is funny and simple. However, many ancestors have always felt that it is very complicated, resulting in a long process of over 2,000 years. Visible, it is not a simple one. The earliest elements were far beyond the epoch. Many philosophers believed that everything in the universe could be broken down into simple basic materials. The Greeks regard these simple substances as water, fire, air and earth. China has ”Yin and Yang Five Elements“. Indians have also proposed the theory of ”all things consisting of water, earth, fire, air, ether, time, space, soul, and sensation. For many centuries, people recognized these as the elements that make up the universe."