М. М. Кутепова The World of Chemistry Мир

Look through the text again and choose the suitable title out of the given ones:

1. 
   The Age of Plastics.
   
2. 
   The Importance of Proteins.
   
3. 
   The Nature of Polymeric Materials.
   
4. 
   Man-made Polymers.
   

4. 
   Look through the text once more and put the numbers of the given plan in the order of events they occur in the text:
   

1. 
   The history of polymers.
   
2. 
   Natural organic products.
   
3. 
   The molecules of polymers.
   
4. 
   Discoveries made by modern methods.
   
5. 
   The importance of organic polymers.
   
6. 
   New industries of man-made organic polymers.
   
7. 
   Properties of synthetic polymers.
   

5. 
   Read the text thoroughly with a dictionary and answer the following questions:
   

1. 
   What does the life depend on?
   
2. 
   Why does life depend upon organic compounds?
   
3. 
   What is the list of materials needed for life?
   
4. 
   What do organic polymers include?
   
5. 
   What have modern methods of physical and chemical analyses uncovered?
   
6. 
   What products appeared on the basis of the discovery of polymers?
   
7. 
   What properties do synthetic polymers possess?
   
8. 
   Did people use natural polymers in ancient times?
   
9. 
   What were those polymers?
   

138

10. 
    When did the scientists begin thorough investigation of natural organic polymers?
    
11. 
    What have they found out about polymers?
    
12. 
    What are the molecules of polymers composed of?
    

6. 
   Give Russian equivalents to the following English words, word combinations and chemical terms:
   

nouns: means, needs, existence, clothing, wood, intricacy, moisture, attention, fragility, establishment verbs: list, require, defy, repair, uncover, compete adjectives: resistant, superior, available, giant, expensive, feeble, odd adverbs: recently
prepositions and conjunctions: until, whereas word combinations: as late as, on a large scale, it is desirable, long- lived durability, in the range of, in common use chemical terms: glycerol, rubber, diffraction, oils, resins, distil, proteins, ceramics, fibre, fatty acids, cellulose, starch, adhesives, coating, solvent, precipitate, solution, dissolve

7.