概要信息：

化学专业英语    
1. Write the Chinese of the following compounds or phrases (20 points, each 2 points) 
1)  standard electrode potential             2)  alcoholic solution 
3)  alkaline storage battery                4)  chemical nomenclature 
5)  methyl vinyl ether                    6)  infrared absorption spectroscopy 
7)  multimolecular reaction               8)  nuclear magnetic resonance 
9)  polymerization initiator               10)  solubility parameter 
2. Answer the following questions in English. (16 points, each 8 points) 
1) Describe the origin of the law “like dissolves like” in a paragraph of 50 words. 
2) Please list the commonly used methods for the purification of chemical substances (at least 
4 methods required).  
3. Translate the following sentences into Chinese (14 points) 
1) In nanotechnology, a particle is classified according to size: In terms of diameter, fine 
particles cover a range between 100 and 2500 nanometers, while ultrafine particles, on the 
other hand, are sized between 1 and 100 nanometers. (4 points) 
2) The ozone layer can be depleted by free radical catalysts, including nitric oxide, hydroxyl, 
atomic chlorine, and atomic bromine. While there are natural sources for all of these 
species, the concentrations of chlorine and bromine have increased markedly in recent 
years due to the release of large quantities of manmade organohalogen compounds, 
especially chlorofluorocarbons and bromofluorocarbons. (5 points) 
3) All chemical transformations pass through an unstable structure called the transition state, 
which is poised between the chemical structures of the substrates and products. The 
transition states for chemical reactions are proposed to have lifetimes near 10-13 seconds, 
on the order of the time of a single bond vibration. (5 points)