化学专业英语

lactic 乳的
hydronium ion 水合氢离子化学专业英语lactic acid 乳酸
2
litmus 石蕊
soapy 肥皂般的，滑腻的
litmus paper 石蕊试纸 slippery 滑的
dye 染料
neutralization 中和
soak 浸泡，浸渍
evaporation 蒸发
enable 使……能够
chem(o) 化学（的） chemistry 化学 chemical 化学的，化学药品 chemosynthesis 化学合成
化合物分类
现今，化学家知道了成千上万的化合物。
化学专业英语
5
It would be impossible to learn properties and behavior of even a fraction of this number if it had to be done on the basis of individual compounds.
positive 正的，阳的
indicator 指示剂
positive ion 正离子
methyl 甲基
negative ion 负离子
methyl orange 甲基橙 lattice 格子，点阵
phenolphthalein 酚酞 crystal lattice 晶格
react (with, on) 反应 electrovalent 电价的
化学专业英语
4
The Classes of Compounds
Thousands and tens of thousands of compounds are known to the chemist today.
• thousands and tens of thousands成千上万 • be known to被……所知
化学专业英语
Dr.Feng
化学专业英语
1
词汇
chemist 化学家
equation
become 适合，与……
aqueous
radical 基，根，原子团
balance 天平，平衡
acidic 酸的，酸性的
substance 物质
anhydride 酐
sour 酸的，酸味的；变酸
basic anhydride 碱酐
幸运的是，大多数化合物能够组合在一起分成几类。
化学专业英语
7
Then, if we can properly classify a compound, we are at once aware of the general properties of the compound from knowledge of the properties of that class or group of compounds.
taste 味道，气味，味觉
negative 负的，阴的
lemon 柠檬
acid radical 酸根
orange 柑，桔；橙色
share 共享，分享
citric 柠檬的
transfer 转移
citric acid 柠檬酸
coordinate 配位
citrus 柑桔属
coordinate valence 配键
• be aware of 知道，意识到……
那么，如果我们能够恰当地将一个化合物归类，我们立
刻就能从这类化合物的性质来了解这个化合物的一般性 质。
strong acid 强酸
orient 定向，取向
ionize 离子化，电离 pattern 模型，形式
bitter 苦味
化学专业英语
3
The Classes of Compounds
1.Thousands and tens of thousands of compounds are known to the chemist today. It would be impossible to learn properties and behavior of even a fraction of this number if it had to be done on the basis of individual compounds. Fortunately, most chemical compounds can be grouped together in a few classes. Then, if we can properly classify a compound, we are at once aware of the general properties of the compound from knowledge of the properties of that class or group of compounds. For example, HCl is classed as an acid, and by becoming familiar with the behavior of acids as a distinct class, we are at once aware of the general properties of the compound. A great many of the compounds we are to study may be classified as acids, bases, salts, metallic oxides, or nonmetallic oxides. Of these five classes of compounds, the first three-acids, bases, and salts-are by far the most important.
•a fraction of 一小部分 •on the basis of 根据……, 在……基础上
如果根据个别化合物来了解这么多化合 物的性质，即使其中的一小部分也是不可 能的。
化学专业英语
6பைடு நூலகம்
Fortunately, most chemical compounds can be grouped together in a few classes.