Speaking:

Exercise 7. Give the summary of the text, using key vocabulary and tell about:

1. scientists engaged in chemical science;

2. atomic theory;

3. discovery of unknown elements;

4. characteristic features of metals;

5. the ways of processing metals;

6. ability of metals to interact with each other.

Checklist for Section I:

1. How is Absolute Participle Construction translated into Russian?

2. What are the suffixes of abstract nouns?

3. What were the preconditions of appearing Periodic Table?

4. What are the main properties of metals?

5. How can metals be processed?

Section II. Types of Metals

Grammar : Passive Voice.

Word-formation: Suffixes of adjectives – ant, -ive, -full, -less.

Speaking: Characteristics of metals.

Practise the reading of the words:

specific	[spI′sIfIk]
environmental	[In′vaIərənməntl]
corrosion	[kə′rouჳən]
chromium	[′kroumjəm]
cobalt	[kə′bɔ:lt]

Learn the pronunciation and meaning of the words:

failure	[′feIljə]	авария, повреждение
formability		обрабатываемость
drawback		недостаток
density		плотность
pure	[pjuə]	чистый
pig iron		чугун (в болванках)
cast iron		чугун (расплавленный)
scrap		лом, отходы
puddling	[′pΛdlIη]	пудлингование
tungsten	[′tΛηstən]	вольфрам
lead	[led]	свинец
alkali	[′ælkəlaI]	щелочь
sulfuric acid	[sΛl′fjuərIk]	серная кислота
hydrochloric acid		соляная кислота
crankshaft		коленчатый вал
gear		шестерня

Vocabulary development: word building:

Exercise 1. Translate the original and derivative words, using a dictionary and create several new words by adding suffixes:

verb	noun (abstract)	noun (personal)	adjective
to resist	resistance	-	resistant resistible resistive
to prevent	prevention preventer	-	preventive
производить	production product productivity	производитель	producible productive
to use	использование	user	useful useless usable
to apply	application appliance	applicant	применяемый
to modify	modification	-	modificatory modifiable
отличаться	variety variability variance variant	-	various variable variant varied
to destruct	destruction	-	destructive

Exercise 2. Translate word combinations with the verbs in Passive Voice and define their tense:

engineering industry is based on…; metallic materials are divided into…; some materials are categorized as…; the main difference is based on…; ferrous materials are produced in large quantities; non-ferrous materials can be easily fabricated; the term “pure metal” is used for…; all chemical elements but one are eliminated; the designation “metal” is applied to…; almost all impurities have been removed; steel may be shortly defined as…; to non-ferrous metals are referred…; the requirements are met…; vanadium was discovered…

Text

Read the text telling about various types of metals: