English for chemists



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Scction III
Ex. 1. Think of the situations when the following expressions may be used:
it’s a pity; what a pity; not at all; never mind; I’m not surprised; I don’t think so; I have no idea; excuse me (for)
Ex. 2. Translate the scntcnccs into English using expressions from exercise 1.
1. Простите, что я пришел так поздно. — Ничего, я еще долго буду здесь. 2. Петров получил двойку за контрольную работу. — Не могу этому поверить. Он всегда хорошо занимался. 3. Как жаль, что я не приду завтра на семинар, он будет интересным. — Я так не ду­ маю. 4. Спасибо, что сказали мне об этом. — Не за что. 5. Я читал этот текст с большим интересом. — Не удивительно, он ведь о Мен­ делееве. б. Завтра в 3 часа будет сообщение о новых результатах ис­ следований. — Жаль, я не приду, у меня в 3 часа лекция. 7. Ты не знаешь, когда он представит свою работу? — Понятия не имею.
Ex. 3. Make up sentences or short stories with the following words:
1) relation, study, weight, property, lead to, periodic, discovery, table; 2) occur, element, order, table, periodic, systematic; 3) consist, isotope, argon, entirely, almost, mass, 40, number; 4) predict, yet, Mendeleyev, discover, existence, which, element, not, six; 5) periodic, horizontal, table, row, consist, call, period, element; 6) vertical, periodic, column, table, group, call
Ex. 4. Give detailed answers to the following questions:
1. What docs the periodic law state? 2. How docs the periodicity of elements show itself? 3. What do you know about periods of elements? 4. What do you know about groups of elements? 5. Why was the periodic law accepted immediately after its proposal?
Ex. 5. Discuss the following topics:
1. The History of the Periodic System.

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  1. The Description of the Periodic Table.




  1. Predictions Come True.

  2. Characteristic Features of One of the Groups of Elements.

DO YOU KNOW THAT...


At present 109 elements arc known to the world science, some of them have only hypothetical existence. Attempts arc being made to synthesize them in laboratory. Two elements bear the names of great Russian scientists Mendeleyev and Kurchatov. They arc No. 101 (mcndclcvium) and No. 104 (kurchatovium). The development of the science of periodicity was greatly influenced by the synthesis of transuraniums. Ruthenium (No. 44) was named in honour of Russia.

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