3 Part One. The Predicate

Section III

Ex. 2. Respond to the following statements:

1. The classification of substances into acids and bases has greatly changcd. 2. The theory of ionic dissociation has played a great role in the development of chemistry. 3. The problem of nomenclature is still very important in chemistry.
Ex. 3. Give detailed answers to the questions.

1. What are the characteristic properties of acids? 2. What is the modern definition of a base? 3. What was the role of the theory by Arrhenius in the development o f acid-base classification? 4. What is dissociation?

Ex. 4. Discuss the following topics:

1. The Problems of Classification in Chemistry.

2. The Evolution of the Theory of Acids and Bases.

3. The Present Concept of Acids and Bases.

Lesson 26
GRAMATIKA: Aniqlanish funktsiyasida gerundiy va gerundial aylanish. Birlashma va aniqlash funktsiyasida ishtirok eting. Communion II dan keyin infinitiv va so'zlar, shubhasiz, aniq.
Section I
Ex. 1. Practise your reading.

Liquid solutions provide an extremely convenient means of bringing together carefully measured amounts of reagents and of allowing them to icact in a controlled manner.

Ex. 2. State what parts of speech the following words belong to:

press, pressing, pressure, compress, compressible, incompressible, compression

Ex. 3. Define the meanings of the word respect in the following sentences:

1. We respect our supervisor very much. 2. In this respect the twsubstances are alike. 3. Everybody has great respect to our lecturer in up short dialogues according to the example.general chemistry. 4. Selenium resembles sulphur in many respects. 5.My opinion is in no respectdifferent from the author’s. 6. With respectto their properties, galogens are of particular interest.

Ex. 4. Analyse the following sentence:

The most important problem of chemistry is that of explaining the behaviour of substances.

Text 26 A