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1. Discuss this text by putting general questions and aswering them.

2. Divide the text into logical parts and entitle each of them.

1

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8

3. Put down the names of some chemical elements mentioned in the text into the rows of the puzzle and in the selected column read the name of an outstanding chemist, one of Mendeleyev’s disciples, who worked at Kharkov technological institute:

1) a colourless odourless highly reactive gaseous element; the most abundant element in the earth’s crust; 2) a toxic metalloid element, existing in several allotropic forms; 3) a light malleable ductile silvery-white metallic element that resists corrosion; it is used, esp. in the form of its alloys, in aircraft parts, kitchen utensils, etc.; 4) a brittle bluish-white metallic element that becomes coated with a corrosion-resistant layer in moist air; it is a constituent of several alloys, esp. brass and nickel-silver, and is used in die-casting, galvanizing metals, and in battery electrodes; 5) a brittle metalloid element that exists in two allotropic forms; occurs principally in sand, quartz, granite, and clay. It is used in transistors, rectifiers, solar cells, and alloys. Its compounds are widely used in glass manufacture and building industry; 6) a very reactive soft silvery-white element of the alkali metal group occurring principally in common salt; 7) a nonmetallic element existing in the three crystalline forms: graphite, diamond, and buckminsterfullerene; 8) a malleable ductile silvery-white ferromagnetic metallic element. It is widely used for structural and engineering purposes.

4. Change direct questions given below into indirect ones. Use the following expressions to begin your indirect questions with: “I wonder” or “It’s interesting”.

1. What element constitutes the most part of the human body’s mass?

2. Who can answer what is the basic unit for organic molecules?

3. How many elements is the human body made up of?

4. What trace elements does a human body contain?

5. How much money might you have for your skin?

Grammar Practice

1. Find all the occurrences of the pronoun “it” in the text. Note that they have different functions. Compose the sentences of your own using the same meanings of “it”.

2. Find all the Irregular Verbs in the text and write their three forms. Then check your accomplishment using the list of irregular verbs.

3. Explain the use of the verb forms in the conditional sentences referring to the future and translate them into Ukrainian.

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