3.Give Russian equivalents to the following words, word combinations and chemical terms from the text:

1. research worker 2. well-ordered

3. majority 4. firmly

5. were convinced 6. particles

7. advanced 8. realized

9. unsuccessful 10. to exercise

11. to influence 12. could not bear

13. had been appointed 14. disorder

15. comparison 16. according

17. similarity 18. applied

19. increasing 20. insight

21. for example 22. weight

23. tools 24. nucleus

25. lucidly 26. density

4.Match the synonyms in ex. 3and ex. 4:

a) to affect b) investigator

c) were sure d) unlucky

e) resolutely f) progressive

g) had been given a position h) instruments

i) for instance j) centre

k) very small bits l) understood

m) to exert n) chaos

o) likeness p) making greater

q) collation r) properly organized

s) in agreement with t) thickness

u) used v) disliked very much

w) intuitive cognition x) heaviness

y) clearly z) a greater number