Read and catch the idea of the dialogue. Describe any lab where your practice takes place

- Hello, Jack. Haven‘t seen you for ages!

- Hi, Ann! Glad to meet you again. How are you?

- Fine, as always! And what about you? How do you find your new students’ life?

- Generally speaking my student’s life gives me much pleasure.At last I can have enough time for my favourite subject.

- You study chemistry, don’t you?

- Yes, I do. It’s a difficult but very interesting science.

- You’ve got much practice now, don’t you?! Do you make many experiments in the laboratories?

- Certainly, yes. Practical classes are my favourite ones. Would you like to see our chemistry lab? Oh, common! It is a very interesting place. I have some minutes, so I could show you it now, if you don’t mind.

- Let’s go then, if it’s not far from here.

- Come in. At first sight there is much glass in the lab.

- Oh, really! There are so many bulbs, flasks, tubes and pipes here. It seems to me that it is a little bit magic place…

- There is nobody here, but be careful, please, as there is so much glass everywhere for the next series of experiments on the benches today.

- And what are there on the shelves?

- There are test-samples of different chemicals. Here you can see acids, alkalies, iron, tin, aluminium, nickel, chalk.

- And what is there in the right corner?

- Ah! It’s a stove. We use it sometimes for our experiments.

- What is there in the big bottles?

- There is distilled water, we also have an apparatus for the preparation of it. We need much distilled water.

- There are so many stands and placards on the walls.

- Yes, you can see photos of our staff, on the other the students do different experiments. If you noticed, we must be in a uniform during our practice not to spoil the cloths. As for me, I don’t like it, but it’s really necessary not to spoil the cloths.

- Thanks, Jack! You are a nice guide.

- You are welcome! Bye!

- See you later!

19. Translate the following sentences paying attention to the meanings of the verb "to have":

1. A first-year student has to carry out a number of experiments in the laboratory of general chemistry. This term the students have carried out a number of experiments. 2. These substances have very low solubility. They have to find out the solubility of this substance. They have found the solubility of this substance and now can investigate its properties better. 3. Hydrogen peroxide has been heated. Hydrogen peroxide has a lower vapour pressure than water. 4. The evaporation has to be carried out in the waterbath. 5. This crucible has been used for heating some solutions. 6. This solution has an unpleasant odour, he has to employ it in the ventilation-hood. 7. A rombic sulphur has to be kept at a temperature of 96°C. 8. It is necessary to purify water, you will have to pass it through filter. 9. It has to be noted that chlorine dioxide reacts with water and yields a mixture of chlorous and chloric acid.

20. Translate the following sentences paying attention to the meanings of the verb "to be":

1. This substance is colourless and odourless. 2. This solution was to be heated in a porcelain crucible. 3. Many new research institutes are being built in our country. 4. They are discussing a very important problem dealing with the development of new branches of chemistry. 5. The volume of an object increases when it is heated. 6. There is a large new laboratory in our Institute. 7. This experiment is to be carried out again, the results are wrong. 8. He is to graduate from the Chemico -Technological Institute this year. 9. The solution was heated and evaporated. 10. The meeting of our Chemical Society is to take place tomorrow at 5 o'clock.

Дата добавления: 2014-11-07