Ответы на Test 29.

1.Read and translate the text into Ukrainian in a written form.
MAJOR PROPERTIES OF ELEMENTS
An element is a substance which contains only one kind of atom. It has been found possible to resolve all known substances into about 109 elements: many of these elements are rare, and relatively few arc common in nature. Each of them is very important because they compose all the materials found on the earth.
Elements have properties distinguishing them from other substances. Some of these properties are their colour, hardness, odour, taste, density, solubility in liquids, their ability to conduct electricity, and others. All these properties can help to distinguish one element from another.
Sugar, starch, cellulose, wood and paper, for example, differ from one another in many ways, but each of these substances is composed of the same three elements: carbon, hydrogen and oxygen.
Oxygen is the most abundant element on our planet. Because of its chemical properties, it has been called the most important of all elements to man. It is a colourless, odourless, tasteless gas, slightly heavier than air and is slightly soluble in water.
Some elements have been found occurring either in the rocks and water which make up the Earth´s surface or in the air around us; others are so active that they are never found free at all. Some elements have been produced artificially and it is not known for certain whether they exist in nature or not. Among the elements there are solids (gold, silver, carbon, sulphur), liquids (mercury, bromine) and gases (oxygen, nitrogen, hydrogen).
All pure metals are elements. On the other hand, comparatively few of the elements are non-metals, and many of these are gases.
2.Answer the following questions.
1.What is an element?
2.How many elements do you know?
3.What are the properties of elements?
4.What elements are sugar, starch, cellulose, wood and paper composed of?
5.Are all pure metals elements?
3.Put 5 types of questions to the following sentences.
1.They compose all the materials found on the earth.
2.All these properties can help to distinguish one element from another.
4.Give plural of the following nouns wherever possible.
Gonococcus, people, foot, noxa, commander-in-chief, peach, city, capital, orange, plus.
5.Give degrees of comparison of the following adjectives.
Good, silly, cheerful, expensive, noticeable, quick, strange.
6.Put the verbs in brackets into the required tense form.
1.This pretty young woman (to be)... the doctor from our district polyclinic.
2.This doctor (to receive)... many patients the day before yesterday.
3.Next summer this patient suffering from lung disease (to go) ... to the Carpathians to receive climate-based therapy.
4.I (to be)... busy now. I (to sterilize)... the glassware.
5.That intern (to work) ... hard the whole year to become a good endocrinologist.
6.My friend (to take)... the exam in Anatomy at this time tomorrow.
7.The ambulance ... just (to lake)... this boy to the hospital.
8.Now he was glad he (not to agree)... to be operated on the esophagus.
9. Next year our scientists (to fullfilt)... their investigation by January.
7.Transform the following sentences into the Past and Future. Add a word or a phrase to show past or future time.
1. Students of all faculties, including the faculty of pharmacy, study foreign languages.
2.It is possible to find any book at our students’ library.
3.- What is the doctor doing now? - He is putting on a splint onto the patient´s leg.
4.I have just seen the nurse in the hall.
8.Choose the proper definition of the term.
Element:
1.any of the 118 known substances (of which 93 occur naturally) that consist of atoms with the same number of protons in their nuclei;
2.a substance that contains atoms of two or more chemical elements held together by chemical bonds;