English for chemists

Section Ш
Ex. 1. Answer the questions, using the verb make.
I. When arc you going to make calculations? 2. Who advised you to make this approach to the problem? 3. Have you finished making your measurements? 4. Do you make many mistakes in your English? 5. Don’t you remember when Mendeleyev made his greatest discovery? 6. I think he won’t make use of this law and what about you? 7. His lecture made a deep impression on me, and what about you? 8. How long did it take you to make your experiment?
Ex. 2. Translate the scntcnccs into English.
1. Я думаю, необходимо сшс раз провести расчеты. 2. Она всегда делает ошибки в чтении. 3. Наш лектор — большой ученый, он сде­ лал важное открытие в физической химии. 4. Сначала вам надо изу­ чить литературу по этому вопросу. 5. Никто не пользуется этим при­

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бором сейчас, вы можете выполнить свои измерения. 6. Она внесла предложение поехать за город вместе. 7. Он произвел на нас очень хорошее впечатление.
Ex. 3. M ake up short dialogues according to the model.
Model'. — A request.
— An answer. (+, -)
Example: — Give me your pen, please.
— Here you are. (Sony, but I’m writing just now.)
Ex. 4. Give detailed answers to the following questions:
1. What is the essence of Avogadro’s principle? 2. In what way can Avogadro’s principle be used? 3. What do you know about the molccular motion? 4. What is the principal difference between gases, liquids and solids? 5. What is the difference in properties between crystalline and non-crystalline solids?
Ex. S. Discuss the following topics:

1. 
   The Characteristic Features of Gases, Liquids and Solids.
   

2. 
   The Difference of the Molccular Motion in Various States of a Substance.
   
3. 
   The Influence of the Temperature and the Pressure on the State of a Substance.
   

W HAT IS IT?

A compound of oxygen and another clement (metallic or non-mctallic).