I.4. Определите функцию каждого из выделенных слов в предложении и назовите часть речи, к которой они относятся (глагол или существительное).

1. Carbon forms extensive covalent bonds not only with other elements but also with itself.

2. Minerals are available in tablet, capsule, powder, and liquid forms.

3. The body needs vitamin B₂ for proper circulation and healthy skin.

4. Oral contraceptives may increase the needs for folic acid.

5. The largest amounts of vitamin B₁₂ are found in cheese, eggs, liver, milk and seafood.

6. A daily dosage of vitamin A for good health amounts to 10,000 IU.

7. Acne is a sign of various hormonal changes that take place at puberty.

8. During a chemical reaction a substance changes its chemical structure and composition.

I.5. Подчеркните сказуемое в каждом предложении и назовите его видо-временную форму в активе или пассиве по следующему образцу.

Inorganic chemistry deals with the compounds of all the chemical elements except carbon. (deals – Present Simple Active)

1. In October 1807 the English chemist Sir Humphrey Davy isolated potassium and then sodium.

2. Industrial chemistry deals with making in vast quantities the chemicals required by modern industry.

3. Physical chemistry is concerned with those parts of chemistry which are closely linked with physics.

4. Pharmacy is the branch of chemistry which is carried out in a drugstore.

5. Analytical chemistry deals with the content of materials and is divided into two subjects: quantitative analysis and qualitative analysis.

6. Quantitative analysis examines the amounts of different elements within a compound.

7. Biochemistry involves the study of compounds and chemical reactions occurring in living organisms.

8. The study of the inside of the atom revolutionized chemistry and physics in the 20^th century.

9. Some substances react so rapidly and violently that only careful monitoring of the conditions will lead to the desired effect.

10. Frequently, heating will increase the rate of a reaction.

I.5. Прослушайте небольшой текст и скажите, о чем в нем говорится.

II. Работа с текстом.

II.1. Ознакомьтесь со словами к тексту а:

the universe [ju:nI΄ v@:s]	вселенная
state [steIt]	состояние
property [΄ prOp@tI]	свойство
size [΄saIz]	размер
atom [΄eIt@m]	атом
electron [I΄ lektrOn]	электрон
charge [΄ tSA:dZ]	заряд
nucleus [΄ nju:klI@s] (pl nuclei)	ядро
valence [΄ veIl@ns]	валентность
way [΄ weI]	способ, образ действия (то, как что-то делается)
bond, bonding [΄ bOndIÎ]	связь
ion [΄ aI@n]	ион
total [΄ tout@l]	общий
diverse [daI΄ v@:s]	разнообразный
atomic [@΄ tOmIk]	атомный
ionic [aI΄ OnIk]	ионный
complete [k@m΄ pli:t]	полный
abundant [@΄ bönd@nt]	распространенный, обильный
the melting point	точка плавления
the boiling point	точка кипения
to decompose [dI:k@m΄ pouz]	разлагать на составные части
to constitute [΄kOnstItju:t]	составлять, входить в состав
to occur [@΄ k@:]	встречаться
to account (for) [@΄ kaunt]	насчитывать (ся)
to indicate [IndI΄ keIt]	указывать
to determine [dI΄ t@:mIn]	определять
to move [΄ mu:v]	двигаться, перемещаться
to hold [΄ hould] (held, held)	удерживать
to gain [΄ geIn]	приобретать, принимать
to lose [΄ lu:z] (lost, lost)	терять, отдавать
to transfer [tr{ns΄ f@:]	перемещать
to arrange [@΄ reIndZ]	размещать, располагать
obviously [΄ ObvI@slI]	очевидно
accordingly [@΄ kO:dIÎlI]	соответственно
extremely [Iks΄ tri:mlI]	чрезвычайно, крайне
according to [@΄ kO:dIÎt@]	согласно, в соответствии с