1.chemistry around us为题的英语作文

Chemistry is one of oldest sciences,and chemistry touches many other scientific fields.It makes major contributions to agriculture, electronics , biology, medicine, environmental science,computer science, engineering, geology, physice, metallurgy,and mineralogy,among many others.We create new medicines,make new materials for shelter and clothing and transporttion,invent new ways to improve and protect our food supply,and improve our livesin many other ways as well.All of these activity in touch with chemistry.Thus we see chemistry as "central" to the human effort to move above the brutish existence of our caveman ancestors into a world where we can exist not only in harmony with nature,but also in harmony with our own aspirations.。

2.英语作文：What is chemistry 有没有大神 急求啊

Chemistry is the study of substances; their properties, structure, and the changes they undergo.Chemistry is a basic science whose central concerns are -the structure and behaviour of atoms (elements)the composition and properties of compoundsthe reactions between substances with their accompanying energy exchangethe laws that unite these phenomena into a comprehensive system。

3.英语作文：What is chemistry 有没有大神 急求啊

Chemistry is the study of substances; their properties, structure, and the changes they undergo.

Chemistry is a basic science whose central concerns are -

the structure and behaviour of atoms (elements)

the composition and properties of compounds

the reactions between substances with their accompanying energy exchange

the laws that unite these phenomena into a comprehensive system.

4.我为什么选择化学这专业 英语作文

To begin with, chemistry is known as the central science, which means it has close relationship with almost every field of modern science. With the development of mathematics and physics, approaches and theories of chemistry research is eminently advanced while applied chemistry promotes the research works of biology, enviromental science, information technology, etc. It was alleged that 20th century is the century of physics and 21th century is the century of life science and information science. However, thanks to the proposal of quantum theory, theoretical chemistry was greatly boosted and similarly, without the improvement of chemistry, especially analytical and synthetical methods, life science and information technology will face their bottlenecks. Thus, it can be claimed that both 20th and 21th centuries can be considered as the centuries of chemistry.Secondly, chemistry permeates into nearly every corner of human life and society. For example, a large part of clothing manufactured today are at least partly made of synthetic fiber and stained by organic dyes. Besides, there can hardly find any food without additives. Moreover, though the utilization of artificial fertilizers and pesticides are criticized a lot, without these things, most of human beings on this planet would suffer from famine. In addition, advanced materials provides firmer packages, warmer houser, and safer transportation.The last but not the least, chemistry is the discipline which I love. As is known to all, interest is the best teacher. Therefore, I believe I can learn it well. That's why I choose it as my major.化学专业本科生飘过，肺腑之言。

5.【请大家帮我修改一下这篇英语作文,Wehavealotoflessons,

首先你这篇文章的高级词汇太少了a lot of =可以用 a large amount of 很形象的描述很多，更重要的是词汇多或者用 numerous 对不对.such as=同样的道理 ，例如也有很多高级词汇，for instance 这就是个比较好的高级词汇But= 可以用 nonetheless 你看这个词看起来就很难，只要你记住，下次就可以大展身手了或者用 whereas第二 你的句式太单调了，废话多不要总是we ,i的要多用复合句.比如第二句话讲作息时间的，可以这样写The study time of whole day is from 5:20 to 21:30 and we got up at 4:50 and go to bed at 22:00.注意前后数字要统一.这是我的建议，加油阿.急需你采纳我.。

6.求一篇文："chemistry

Erm。

.. your spelling is wrong。. Studying not studing。

Life on earth depends on the chemical element carbon, which is present in every living thing. Carbon is so important, it forms the basis for two branches of chemistry, organic chemistry and biochemistry. The GED will expect you to be familiar with the following terms: Hydrocarbons - molecules that only contain the elements carbon and hydrogen (e.g., CH4 is a hydrocarbon while CO2 is not)Organic - refers to the chemistry of living things, all of which contain the element carbon, Organic Chemistry - study of the chemistry of carbon compounds involved in life (so, studying diamond, which is a crystalline form of carbon, isn't included in organic chemistry, but studying how methane is produced is covered by organic chemistry), Organic Molecules - molecules that have carbon atoms linked together in a straight line (carbon chain) or in a circular ring (carbon ring), Polymer - hydrocarbons which have chained together . P/S: I don't know what you accually wanted for。 Is this?。

7.【英语作文：Communicationisveryimportant】

Communication is very important The world we are living in is amazing（令人吃惊的）.There are countless living things.How can they live harmoniously（调和地）？The answer is communication. Communication,of course,doesn't need to be in words.We can talk to each other by a smile,a frown（皱眉），a shrug（耸肩） of our shoulders,and a gesture（手势） with our hands.Shaking hands is a very common gesture,which is performed both on initial（开始的，最初的） greeting and departure（出发）.We know that birds and animals use a whole vocabulary（词汇） of songs,sounds,and movements.Bees dance their signals,flying in certain pattern（模式） that tell other bees where to find nectar（【植】花蜜） of honey（甘美的）. Can plants talks?Yes---but not in words.We have reasons to believe that trees do communicate with each other.Not long ago,researcher learned some surprising things.First,a willow（柳树） tree attacked in the woods by caterpillars（毛虫） changes the chemistry of its leaves and made them taste so awful that the caterpillars go disgusted（厌烦地） and stopped eating them.Then,ever more astonishing（令人惊讶的），the tree sent out special vapors（水汽）---an alarm signal stimulating（刺激） its neighbors to change the chemistry of their own leaves and make them less tasty（【口】美味的） Communication is so important in the nature world.As human beings we should communicate with each other to make the earth peaceful.。

8.化学与我们生活120英语作文

I think reading is very important and useful.Reading can help us learn a lot of knowledge.Some people say reading is useless,because they think reading will cost much money and take much time.

As a student,he may think reading is very hard and make him very tired.This is wrong.If we want to have a good life in the future,we must read well.Reading isn't a difficult thing.We can listen carefully in class and do homework carefully.If we can do these ,we will feel very happy from reading.