part2-unit6compounds范本.ppt

化学化工专业英语Specialty English for Chemistry and Chemical Engineering 主讲 丁明洁河南城建学化工学院 Part 2 / lesson 6-7 Nomenclature of compcounds Exam Guideline:指南 Instruction：说明书 safety shower：消防水龙头 first-aid kit：急救箱 fire extinguisher：灭火器 bench top：工作台面 Label：标签 Accident：事故 Spill：溢出 Assistance：救援 skin burns：皮肤灼伤 Prelab：实验备课/预习 Objective：目标 flow chart：流程图 outline form：轮廓图、大纲 Rework：修订，重作 Discussion：讨论 Result：结果 Prediction：预报、预言 Conclusion：结论 Suggestion：建议 Refinement：提炼、精炼 Unit 6 Nomenclature of Inorganic Chemistry simple substance: in elementary form; Compound :containing more than one types of elements. The IUPAC nomenclature of inorganic chemistry is a systematic method of naming inorganic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC). Ideally, every inorganic compound should have a name from which an unambiguous formula can be determined. IUPAC: international union of pure and applied chemistry Nomenclature:命名学，述语 Systematic：系统的 Unambiguous Formula：分子式 The names “caffeine” and “3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione” both describe the same chemical. The systematic name encodes the structure and composition of the caffeine molecule in some detail, and provides an unambiguous reference to this compound, whereas the name “caffeine” just names it. Caffeine：咖啡因 Encode：把…译成密码 in some detail：详细地 Reference：参考，依据,阐述，提到 These advantages make the systematic name far superior to the common name when absolute clarity and precision are required. However, even professional chemists will use the non-systematic name almost all of the time, because caffeine is a well-known common chemical with a unique structure. Similarly, H2O is most often simply called water in English, though other chemical names do exist. absolute ：绝对的 Make…far superior to…　使…优于… common name：俗名 Clarity：　清晰度、清楚，透明 Precision：精确 Similarly：同样地 Positively charged ions are called cations and negatively charged ions are called anions. The names of ION