Программа по формированию навыков безопасного поведения на дорогах и улицах «Добрая дорога детства» 2

Exercise 5. Fill in the words and translate:

Exercise 6. Make up the sentences:

1. 
   A, water, is, chemical, of, oxygen, compound, hydrogen, and.
   
2. 
   Is ,it, the, abundant. of, most, all, compounds, chemical.
   
3. 
   Water, not, burn, does, is, and, used, putting, for, out, fire, the.
   
4. 
   Hydrogen, the, is, gas, lightest, known.
   
5. 
   Water, air, is, like, never, quite, pure, found, nature, in.
   

Exercise 7. Translate according to the models:

1. 
   The salt separates from freezing water, the ice being quite pure.
   
2. 
   Water is never absolutely pure in nature, the amount of impurities depending on the locality.
   
3. 
   When we drink water, it washes our system, the body being purified of poison.
   
4. 
   The experiments with water containing substances being very interesting, we worked readily.
   
5. 
   The range of water application being very wide, the scientists are interested in them.
   
6. 
   Rain water being examined with a magnifying glass, they saw many impurities.
   
7. 
   The experiment being very difficult, he has to spend much time in the laboratory.
   
8. 
   A gas can be dissolved in liquid, the latter changing its boiling point.
   

1. 
   Aluminium is a light metal, but copper is much heavier.
   
2. 
   Metals are seldom used in their pure form as alloys (сплавы) have better properties for industrial application.
   
3. 
   As steel is one of the strongest metals, we use it for products where great strength is required.
   
4. 
   As water is necessary for the existence of man, we drink water and receive it with many products.
   
5. 
   While water like air is never found pure in nature, we usually purify it by various means.
   
6. 
   Hydrogen doesn’t burn, whereas oxygen supports burning.