Measurements

Exercise 6. Translate the following text.

Exercise 5. Translate the following sentences.

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

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

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

VOCABULARY EXERCISES

Exercise 1. Comprehension questions.

1. Where do pharmacy students have practical classes in Chemistry?

2. How many rooms does a typical chemical laboratory consist of?

3. What groups is all the glassware divided into?

4. What vessels does the glassware for measuring include?

5. What vessels does the special glassware include?

6. What reagents are available at every laboratory?

7. In what amounts are reagents supplied?

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

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

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

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.

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.

Дата добавления: 2014-11-18