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English for students of Chemistry (1).docx
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  1. Read the following English word combinations taken from the text Experiments in the Laboratory. Choose their Russian equivalents.

theoretical conclusion

первоначально имевшийся в колбе

on warming the flask

вытеснять кислоту

to displace the acid

уравнение, представляющее реакцию

to flow down from the funnel

взаимодействие кислоты и основания

the interaction of an acid with a base

теоретический вывод

to dissolve some of the gas in water

стекать из воронки

heavier than the air

при нагревании колбы

originally present in the flask

растворить некоторое количество газа в воде

the equation representing reaction

тяжелее воздуха

  1. Read the sentences, paraphrase the sentences using the synonyms instead of the underlined words.

  1. To carry out an experiment it is necessary to study the proper theoretical material.

  2. On heating the flask, the hydrogen chloride is expelled as a colourless gas with a suffocating odour.

  3. The acid flows down from the funnel and comes into reaction with the metal.

  4. Hydrogen is obtained in the laboratory by using Kipp’s apparatus.

  5. Salts are produced in the laboratory by several types of chemical reactions.

  6. Iron or zinc is put in the middle bulb of the generator.

  7. The reaction of zinc with an acid gives the replacement of hydrogen atoms in the acid by zinc.

  8. The first step in obtaining hydrogen chloride is to put some sulphuric acid in a flask.

  9. The crystals of salts differ in colour and form.

  10. All the sodium chloride originally present in the flask has been changed.

VI. Read the sentences, insert the proper prepositions into them. Translate the sentences into Russian.

18: at (1) by (2) from (1) in (4) of (5) through (1) with (3)

1. … the lesson … inorganic chemistry the teacher carries out different experiments to illustrate the theory with practical examples.

2. We place the sodium chloride … a flask and add sulphuric acid … a tube.

3. The hydrogen chloride gas displaces air … the bottle.

4. Salts are prepared … the interaction … an acid … a base.

5. When hydrogen chloride comes … contact … the moist air it produces heavy clouds … white fumes.

6. The reaction … zinc … hydrochloric acid results … the replacement … hydrogen atoms … the acid … zinc.

VII. Match the words in column a with their definitions in column b. Define the part of speech the words in column a belong to.

A

B

1. dissolve

a) higher then or above something

2. expel

b) to have an effect on each other or something else

3. excess

c) to force something out from a container

4. pour

d) a larger amount than is needed or usual

5. interact

e) to cause a liquid or a loose substance to flow into or out of a container

6. upper

f) suitable or correct

7. proper

g) to make or to become liquid when put into a liquid

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