English for chemists

Scction III
Ex. 1. Respond to the following, using the expressions: to do smth (to work, to study, to make observations, etc.) under smb (Prof. N, Dr. A, etc.).
1. The laboratory is now an important scicntific centre, who is the head of it? 2. He says he has a very good scicntific adviser, under whom docs he study? 3. He has written a very good articlc, whom did he consult? 4 .1 know that he docs physics at Moscow University, who is his supervisor? S. You should consult your tcachcr before making observations, who is your tcachcr? 6. This book is rather difficult but very useful for your work, who advised you to read it? 7. Your brother obtained his degree last year, who was his scientific adviser?

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Ex. 2. Translate (he sentences into English.
1. Я выполнил эту работу под руководством профессора N. 2. Сту денческое научное общество работает под руководством доктора N.
3. Группа, которой руководит доктор N, недавно опубликовала очень интересную статью о своих последних исследованиях. 4. Под чьим руководством вы проходите практику? 5. Мы занимаемся в лаборато­ рии качественного анализа под руководством N. б. Моя подруга вы­ полняет свою курсовую работу под руководством N, ей очень нра­ вится работать с ним. 7. Я не знаю, под чьим руководством мы будем работать в следующем учебном году.
Ex. 3. M ake up short dialogues according to the model.
Model'. — A question.

— An answer. (+, -)

— A request.
Example: — Are you going to the dean's office today?

— 1 think so.

— Could you give my application to the secretary?
Ex. 4. Give detailed answers to the following questions:
1. What can you say about the early studies conccming the structure of molecules? 2. What important discoveries were made in the coursc of structural investigations? 3. In what way was the valcncc bond understood in the 19th ccntury? 4. What investigations laid the foundation of the modem electronic theory? 5. What methods were used to study the structure of molcculcs?
Ex. 5. Discuss the following topics:

1. 
   The Contribution of the Great Scientists of the Nineteenth Ccntury to the Structural Theory.
   

2. 
   The Methods Used in Structural Investigations.
   
3. 
   The Refinement of the Electronic Theory of Valence.
   

W HAT IS IT?

The combining power of an atom, equal to the number of hydrogen atoms which an atom will combine with or replace.