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含有化学成分的物质早已以一种无形或者有形的状态存在于我们的社会生活中,而化学的存在早已从原始社会就有了,在原始社会的时候,人类首先是用火生存的,然后由野蛮社会进入文明社会,用人类独有的智慧来运用物质的存在为人们的生活做服务,并且,利用化学的方法认识并改造天然物质,寻找人类所需要的东西,在人类运用火之后,开始学会了各种烹饪,制陶,冶炼和燃烧,在这些过程中,人类逐渐认识到燃烧时一种很奇妙的化学现象,所以,人类开始进行带有智慧的行为,开始生产实践和活动,在这些生产实践上,发明了大量的制品,它是由一些天然物质组成的,加上人类的智慧加工改造而最后形成的,这也意味着古代文明的开始,之后随着人类社会生活的不断进步和智慧的完善,为了获取更多的物质和所需的东西,就开始研究和发明化学,而化学的不断进步,成为我们学习和研究的重要对象,不仅仅是科学家研究的重要目标,也是学生学习生活中物质的存在的一种基础认识。化学这门课程,是在初中阶段就开始教学了,从最开始的元素认识,到之后的化学方程式,慢慢的积累,慢慢的认识,不仅是学习学者留下来的宝贵的知识财富,更是对我们的生活有一定的了解,从学习中来,到生活中去,化学在自己的领域有着重要的影响,所以,化学对我们认识和利用物质具有重要作用,也是人类认识和改造物质世界的主要方法和手段之一,同样也是一门很有活力的学科,之得我们认真努力的去学习,去认识。
The chemical composition of matter has existed in our social life in an invisible or tangible condition, and the existence of chemistry has long existed in primitive society. In the primitive society, human beings first lived with fire and then Brutal society into a civilized society, with human wisdom unique to the use of material existence to serve the people’s lives, and the use of chemical methods to recognize and transform natural substances, looking for what humans need, after humans use the fire began Learned a great deal of cooking, pottery, smelting and burning. In these processes, humankind came to realize a wonderful chemical phenomenon during burning. Therefore, mankind began to carry out intelligent activities and started producing practices and activities. These production practices, invented a large number of products, which is composed of some natural substances, coupled with human wisdom and transformation and the final formation, which also means that the beginning of ancient civilization, and then as the social progress of human life And the perfection of wisdom, in order to acquire more material and what we need, we begin to study and invent chemistry, and the continuous improvement of chemistry has become our study And important object of study, an important goal not only scientists, but also the students a basic understanding of material existence of life. Chemistry is a course that begins with teaching at the junior middle school level. From the very beginning of the elemental understanding to the subsequent chemical equations, slowly accumulating and slowly recognizing it is not only a valuable intellectual asset left by scholars, but also Is a certain understanding of our life, from learning to life, chemistry has an important influence in our own field, so chemistry plays an important role in our understanding and utilization of materials, as well as in the realization and transformation of the material world One of the main methods and means, is also a very dynamic discipline, we have to work hard to learn, to recognize.