化学专业基础英语重点句子翻译

alkali metal（碱金属） alkaline earth metal（碱土金属） halogen （卤素） chalcogen（氧族元素）

metal（金属） noble gas（惰性气体） nonmetal（非金属）transition metal（过渡金属）

Certain grouping of the periodic table are designated by a special names. The heavy ，stepped，diagonal line on the table divides the elements into two major classes. Those to the left of the line are called metals （金属） and those to the right， nonmetals（非金属）. Group IA elements are known as alkali metal（碱金属）；group IIA are alkaline earth metal （碱土金属）；group VIA elements are known as the chalcogen（氧族元素）；Group VIIA halogen（卤素）.The group at the cstreme right of the table contains the noble gas（惰性气体）.All the Groups B elements are called transition mental（过渡金属）。

重点词汇

中国科学院 Chinese Academy of Science

能量守恒定律 the law of conservation of energy

道尔顿分压定律 Dalton‘s law of partial pressure

有效数字 significant figures

孤对电子 lone pair electrons

摩尔焓 Molar enthalpy

氨水 ammonia water

稀土元素 Rare Earth Elements

系统误差 systematic errors

电子云 Electron cloud

定量分析 quantitative analysis

IUPAC International Union of Pure and Applied Chemistry 国际纯粹与应用化学联合会

STP standard temperature and pressure

内能 internal energy

理想气体 perfect gas / an ideal gas

1、By a variety of laboratory techniques (some simple and some complex ),they analyse or otherwise lest materials which are to be used or the product of a chemical factory (be it a drug factory,a food factory or a steel mill) to ensure that these products are uniform and pure.

按照各种各样的实验技术（一些简单和一些复杂的）来对一家化工厂所用的以及生产的产品进行分析和试验（它是一家药物工厂，一家食品厂或是一家钢厂）以保证得到的这些产品是均匀的和纯净的。

2、In fact，when i submitted my first major paper on the discovery of the crown ethers ,the editor of journal of the American chemical society , Marshall gates .remarked that my description were replete with industrial jargon . Fortunately he published the paper anyway.

实际上，当我第一次提交关于我发现冠状醚的论文时，美国化学学会的编辑Marshall gates指出我的描述充满了工业术语，幸运的是他发表了那篇文章。

3、Be meticulous (very exact and careful ) in recording the true observation even though you "know" something else should happen. Ask youself why the particular behaviour was observed . Consult your instructor (teacher) if necessary.

记录真实的观察、要特别仔细（非常精细和小心）尽管你“知道”别的什么事将发生。问问自己为什么选择这个特殊的行为被发现。如果必要的话，可以想你的老师咨询。

4、Pharmaceutical chemistry is concerned with drugs their manufacture,their composition .and their effects upon body.

制药化学跟药物的这些有关系：它们的制造，它们的成份和它们对身体的影响。

5、A molecule is the smallest particle of a pure substance that has the composition and properties of a pure substance that has the composition and properties of that substance and is capable of independent existence

一个分子是一种纯物质的最小粒子，该物质具有组成和性能独立存在的能力。.

6、The vapor-liquid equilibrium curve leminates at the cricical point at which the densties of the liquid and the vapor have pccome equal and the boundary between the phases disappears

气液体平衡曲线的终点临界点是液体的密度和水蒸汽密度相等，并且分界线是介于两相消失之间。

7、Double bonds or polar bonds provide sites where reaction is more likely to occur.Unsaturated hydrocarbons readily undergo addition reactions:aromatic compounds tend to undergo substitution reactions. 双建或极性键提供了反应很有可能发生的位置。不饱和烃常常发生加成反应：芳香化合物趋于发生取代反应。

8、What is called the heisenberg uncertainty principle may be stated as follows:It is impossible to know simultaneously both the exact momentum and the exact position of an electron.

Heisenberg测不准原理是什么可被描述如下：不可能同时知道一个电子的准确的动量和准确的位置。

9、Such reactions are most often carried out in the presence of organic base such as pyridine which both catalyzes the reaction and neutralizes the HCL formed as a byproduct.

这样的一种反应最常实现实在有机碱中，比如嘧啶，发生了催化反应和HCL形成副产品。