VOCABULARY. EXERCISES

VOCABULARY

1. luster – блеск

2. property – свойство

3. quantity - количество

4. conductivity - проводимость

5. solid state – твердое состояние

6. brittle - хрупкий

7. undergo - подвергаться

8. to protect … from – защищать от

9. environment – окружающая среда

10. alloy - сплав

11. poor conductor – плохой проводник

12. distinction - различие

13. strength - прочность

14. hardness – твердость

EXERCISES

Ex. 1. Answer to the following questions (письменно ответьте на вопросы):

1. By what properties are metals distinguished from non-metals?

2. What common metals are produced in great quantities?

3. What metals are called light?

4. What properties do non-metals have?

5. What is done to protect metals from corrosion?

Ex. 2. Match the beginning and the end of the sentences and translate them (сопоставьте начало и концовку предложения):

There are some different groups of metals, such as:

1. light metals… 2. common metals… 3. precious metals… 1. nonmetals…

1. iron, copper, zinc… 2. silver, gold, platinum… 3. aluminium, beryllium, titanium… 1. carbon, silicon, sulphur… 2. aluminium, beryllium, titanium…

Ex. 3. Make up the sentences from the following words and translate them into Russian (составьте предложения из данных слов и переведите их):

1. There / several / alloys / groups / important / metals / of / and / are.

2. Metals / corrosion / undergo / can.

3. Organic / corrosion /coatings / protect / steel / metals / from /and.

4. Many / are / as / elements / classified / semimetals.

5. Nonmetals / properties / properties / chemical / show / great / variety / of.