化学是自然科学的一种，在分子、原子层次上研究物质的组成、性质、结构与变化规律;创造新物质的科学。那你想知道写化学发展的英语作文怎么写吗?下面是小编收集整理的一些写化学发展的英语作文，大家一起来看看吧!
写化学发展的英语作文：
Chemistry did not emerge as a science until after the scientific revolution in the seventeenth century and then only rather slowly and laboriously. But chemical knowdedge is as old as history, being almost entirely concerned with the practical arts of living.
化学在 17 世纪的科技革命后才成为一门科 学，其发展是缓慢而艰难的。 但化学知识却象人类历史一样古老，与人们实际生活密切相 关。
Cooking is essentially a chemical process; so is the melting of metals and the administration of drugs and poisons. This basic chemical knowledge, which was applied in most cases as a rule of thumb, was nevertheless dependent on previous experiment. It also served to stimulate a fundamental curiosity about the processes themselves. New information was always being gained as artisans improved techniques to gain better results. The development of a scientific approach to chemistry was, however, hampered by several factors. The most serious problem was the vast range of material available and the consequent difficulty of organizing it into some system. In addition, there were social and intellectual difficulites, chemistry is nothing if not practical; those who practice it must use their hands, they must have a certain practical flair. Yet in many ancient civilizations, practical tasks were primarily the province of a slave population. The thinker or philosopher stood apart from this mundane world, where the practical arts appeared to lack any intellectual content or interest. The final problem for early chemical science was the element of secrecy. Experts in specific trades had developed their own techniques and guarded their knowledge to prevent others from stealing their livelihood. Another factor that contributed to secrecy was the esoteric nature of the knowledge of a alchemists, who were trying to transform base metals into gold or were concerned with the hunt for the elixir that would bestow the blessing of eternal life. In one sense, the second of these was the more serious impediment because the records of the chemical processes that early alchemists had discovered were often written down in symbolic language intelligible to very few or in symbols that were purposely obscure.
做饭基本上是一个化学过程。同样，金属熔炼、使用药品或毒剂也是如此。人们在大多数情况下只是粗糙地运用这些基本化学知识，但这些基本知识的确是来自于前人的实验。它们同时也激发了人们对化学本身的兴趣。 匠人们利用新技术来改良工艺，就增加了 对化学的了解。但是，化学科学方法的发展却有许多阻碍的因素。其中最严重的问题就是要把浩如烟海的物质归纳为若干系统确实很困难。 此外，还有社会和知识的原因。 离开实际用途，化学就毫无价值;研究化学的人必须亲自动手，这就要求他们要有很强的动手能力。 但在许多古代文明中，动手的活都是奴隶的行当。思想家与哲学家与此劳碌决不沾边，因 为在他们看来，实际操作技能低智而乏味。最后，还有一个原因妨碍早期化学的发展，那 就是保密。某个行家一旦发现了新技术，就竭力保密以防被人偷了饭碗。另一个原因加剧 了知识封锁这是因为炼金术士的知识的神秘性。这些术士们要么想他便宜的金属变成黄金，要么期望找到一种长生不老药。从某种意义上说，这第二个因素带来了更严重的阻碍，因为早期术士们的研究成果记载于鲜为人知的或故意让人不懂的符号中。
关于化学的英语作文：
Chemical class is the compulsory course in the middle school. It is one of my favorable classes. When I first contact with this subject, I am interested in it. In my mind, it is miracle. It can see the nature of object. For example, through chemical class, I learn how does water form. Knowing this makes me feel like a little talent. I have a great sense of achievement. Maybe it is my curiosity makes me like this class so much. To be honest, to explore knowledge is very excited and interesting.
化学课是初中的一门必修课。是我最喜欢的课程之一。当我第一次接触这个科目的时候，我就对它很感兴趣了。在我看来，化学真的好神奇。它可以看到事物的本质。例如，通过化学课，我知道了水是怎么形成的。了解这些事情让我觉得我像个小天才。我也有很大的成就感。也许是我的好奇心才让我那么喜欢这个课。老实说，探索知识是非常刺激和有趣的。
关于化学的英语作文：
Liu Ming is my chemistry’ teacher. He is an ordinary-looking little man with thick glasses, but he has a strange way of making his classes lively and interesting.
I remembered his first lesson. He put three bottles on the desk. One was filled with kerosene, one with castor oil, and one with vinegar. And he said "Now watch carefully. Pay attention to everything that I do." He held up one of his fingers and dipped it into the cup after he mixed the three kinds of liquid in a big cup together. A few seconds later, he took his finger out, put it in his mouth and sucked it. "How delicious! You must do everything that I do." said he. And then we did it like him. lmmediately we made a face. The mixture tasted horrible.
It was first chemistry lesson. I never forget it.
关于化学的英语作文：
Inorganic fertilizers use nutrients that are commonly found in soil and plants just in higher amounts. These fertilizers are convenient in that the proper combination of nutrients have been premixed so all you have to do is sprinkle the substance on your lawn or plants and watch them grow. They also tend to work more quickly than organic fertilizers.
Because inorganic fertilizers are applied on top of the soil they may end up in a storm drain and get into the drinking water. According to a study done in 1999 nitrate a commonly used fertilizer can cause endocrine immune and nervous system malfunctions. Ingesting fertilizer from the bag can cause death especially in children and pets so be cautious when using the product around them. Reproductive problems have also been linked to fertilizer poisoning.
关于化学的英语作文：
50 years ago, You could hardly imagine any of the today's life It is no definitly that chemics has already changed our life every inch.I can't help but ask myself Wether is it What will have to happen in the future days that chemics entirely changed the our custom or not. Wether is it there being a kind of clothing wich keep cools in the summer and warms in the winter,or we eating meat produced artificially rather than by a natural process as dinner,or we having the living room with a healthy ecosystem.And what most probably,our vehicle would burn water merely. It's not a short time that I 've learned chemics as my major.Nevertheless who got a cute vision to predicte that in the near future how will the chemics completely change my life
