3 Part One. The Predicate

Section III
Ex. 1. Respond to the following statements. Use the expressions: quite so; I'm o f the same opinion; really; it is not quite so; you are absolutely wrong.

1. It is sometimes difficult to make the reaction procccd faster.2. There is a tremendous number of factors affecting the reaction.3. Catalysts are important only in chemical industry. 4. I hear your supervisor has been awarded the State prize for his work. 5. They say you never attend lectures in history. 6. Borodin was not only a chemist but an outstanding Russian composcr as well. 7. Prof. N has been appointed head of your laboratory, hasn’t he?

Ex. 2. Translate the sentences into English.

1. Siz ikkinchi kursda ekansiz, deyishadi? - Yo'q, men birinchi kursman.

2. Bizning o'qituvchimiz ajoyib olim. - Haqiqatan ham 3. Katalizator reaktsiyaga ta'sir qiladi, ammo u ham o'zgaradi. - Siz mutlaqo adashyapsiz, reaktsiya oxirida katalizatorni asl holatiga qaytarish kerak. 4. Biologik jarayonlarda katalizatorlar ham ishtirok etishlari mumkin - To'g'ri. 5. Katalizatorlar laboratoriyada emas, balki sanoatda ko'proq ahamiyatga ega. - Xuddi shunday.
Ex. 3. Make up short dialogues according to the model.

Model: — A statement.

— A question.

— An answer.

— A statement.

Example: — My supervisor has published a new articlc.

— What is the subject of his investigation?

— Ion-selective electrodes.

— It’s a very promising field.
Ex. 4. Give detailed answers to the following questions:

1. What is the rate of a reaction? 2. What chemical factors afreet the course of a reaction? 3. What physical factors influence the speed of a reaction? 4. What is catalysis? 5. In what way does the presence of a catalyst affect the reaction rate?

Ex. 5. Discuss the following topics:

1. Some Examples o f Slow and Fast Reactions.

2. Factors Influencing the Rate of Reactions.

3. Catalysis.

WHAT IS IT?

A substance which can increase the rate o f a chemical reaction without itself undergoing permanent chemical change.