Exercises

II. Answer the following questions:

1. What does all matter consist of?

2. What are all the molecules made up of?

3. What does the structure of the atom resemble?

4. What structure has an atom?

5. What is a proton (an electron)

6. What is the mass of the hydrogen atom defined by?

7. What is greater: the mass of the proton or that of the electron?

8. Is the diameter of the atom as large as that of the proton?

9. What is heavier: the proton or the electron?

10. What does the size of molecules depend upon?

11. Which atom is the simplest and the smallest one?

12. Is the uranium atom the most complex and the largest one?

13. Are molecules in constant motion?

14. What does the molecule speed depend upon?

15. Do lighter molecules move at a greater speed than heavier ones?

III. Define the meanings of the suffixes in the following words and translate these words: smaller, simplest, naturally, scientist, powerful, powerless.

IV. Read and translate the following words:

small, whether, solid, liquid, particle, to call, solar, size, substance, to break down, further, nucleus, miniature, starch, hydrogen, to consider, to involve, to rotate, amount, opposite, however, although, wavelength, single, to contain, to think.

V. Give Russian equivalents to the following word-groups:

to be made up of in one's turn, it is not good enough, as large as, considering the size, to be о limes greater, as well as, depending upon, in the form of, with in the nucleus, the heavier ... the slower, i. е. although it is small.

VI. Translate the following word-groups of the same root:

electron — electronic — electronics;

electricity — electric — electrically — to electrify — electrification — electrical engineering

nature — natural — naturally — naturalist;

science — scientist — scientific —scientifically;

power — powerful — powerless — power plant.

7. In column B find synonyms to the words in column A:

A: to consist of, a particle, quantity, though, visual, velocity, the same, substance

B: to be composed of, identical, speed, amount, matter, although, a bit, visible

VIII. Give antonyms to the words:

complete, positive, big, light, fast, long, The former.

IX. Give the degrees of comparison of the following words:

light, heavy, small, large, good, far, much, little, powerful, many, great, bad, complex, important, common, simple, interesting, compact, necessary.

X. Translate into Russian the following sentences paying attention to the words «one, ones, that, those»:

1. The mass of the proton is greater than that of the electron.

2. The hydrogen atom is the simplest and the smallest one.

3. Molecules vary from simple ones consisting of two atoms such as the hydrogen molecule, to the most complex ones, like those of starch.

4. The amount of electricity of the proton is as large, as that of the electron.

XI. Use the proper form of the degrees of comparison:

1. He speaks English (хорошо) than she.

2. You feel (плохо) today than yesterday.

3. I think that this article is (необходимый) than the one you are reading now.

4. She knows (много) about it than you do.

5. This text is (интересный).

TABLE IV. The Degrees of Comparison of Adjectives and Adverbs

	Positive	Comparative	Superlative
1 слог	big— большой large — большой small— малень­кий	bigger — больший larger — больший smaller — меньший (более маленький)	the biggest — наибольший the largest — наибольший the smallest — наименьший (самый маленький)
«у» 2 слога	easy — легкий active — актив­ный	easier — легче, more active — актив­нее (более активный)	the easiest — легчайший the most active — активней­ший (самый активный)
3 слога и больше	important — важный	more important — важнее, более важный	the most important — важнейший, самый важный