Vocabulary exercises

Exercise 2. Read the words and word combinations and give the Russian equivalents from the right-hand column.

1. ammonium a. пробирка

2. alkali b. бюретка

3. hydrochloric acid c. дистилляционный аппарат

4. test-tube d. аммиак

5. glass cap e. щелочь

6. burette f. соляная кислота

7. distillator g. стеклянная крышка

8. weight h. вес

9. volume i. объемный

10. volumetric j. объем

11. put on k. измерять

12. measure l. одевать

Exercise 3. Read and translate the words and word combinations.

1. substances – chemical substances – different chemical substances

2. weigh – weight – a room for weighing

3. wash – washing machine – to do the washing – a room for washing

4. equip – to be equipped – equipment – equipment of a laboratory

5. carry out – a room for carrying out experiments – to carry out volumetric analyses – to carry out qualitative analyses

Exercise 4. Translate the following words and word combinations into English.

Щелочь, азотная кислота, серная кислота, соляная кислота, пробирка, колба, мерная колба, стакан, воронка, стеклянная посуда, реторта, мерный цилиндр, проточная вода, дистилляционный аппарат, весы, горелка, взвешивать, вес, получать, количество, объем, объемный, одевать, греть, измерять, реактив, жидкость, калий, аммиак, натрий

Exercise 5. Translate the following sentences.

1. The laboratory is equipped with special tables which are higher than usual ones.

2. The glassware includes graduated cylinders, graduated flasks, burettes.

3. The glassware includes test-tubes, funnels, glasses, flasks, retorts.

4. Chemists work with substances.

5. Flasks are used to measure volumes.

6. The work requires cleanliness.

Exercise 6. Translate the following text.

Measurements

Measurements are the basis of all scientific work. There are many different units of measurements depending on what it is we want to measure. There are measurements of length, mass, time, volume, density and many others. There are three fundamental units: units of mass, length and time. All other units can be expressed as combinations of these basic units; they are called derived units.

The fundamental unit of time is one second. The fundamental unit of length is one metre in the metric system and it was one yard in the old British system.

Exercise 7. Make up sentences using the table.

1. Measurements 2. The fundamental unit of time 3. The fundamental unit of length 4.The basic unit of mass

is are

a……. one second. b……..the basis of all scientific work. c………the kilogram. d…….. one metre in the metric system.

Exercise 8. True or False statements.

1. The students of the pharmaceutical department usually have practical classes in Chemistry in chemical laboratory.

2. The chemical laboratory consists of several rooms: a room for storing the necessary substances and a room for recording the obtained findings.

3. Special glassware includes test-tubes, funnels, flasks of different shapes and sizes, retorts.

4. The windows of the weighing-room should overlook the North as the sun may prevent accurate weighing of the substances.

5. When students come to work to the laboratory they should put on fur coats and mittens.

6. The work in the chemical laboratory requires silence.

Exercise 9. Find the sentences in the text about.

1. The rooms of a typical chemical laboratory.

2. The equipment of the chemical laboratory.

3. The laboratory glassware.

4. The reagents available in the chemical laboratory.

Exercise 10. Finish up the sentences.

1. The students of the pharmaceutical department carry out….

2. The laboratory vessels and glassware are divided into three groups…..

3. The glassware for measuring includes…..

4. On the shelves and racks besides empty vessels there are many…..

5. The laboratory is equipped with….

6. Burettes are used for….

7. Glass-tubes, vessels, bottles, funnels should be …..

8. The windows of the weighing-room should ……

9. Alcohol is……