- •Lesson three Oral topic: in the chemical laboratory
- •Indefinite Passive
- •Imperative mood
- •Imperative Mood in instructions and regulations.
- •If you see the fire
- •Time for fun
- •Vocabulary Learning
- •In the chemical laboratory
- •The microscope
- •Chemistry: an experimental science
- •I suppose (think) so. That’s true. Exactly so. I don’t think so. I’m afraid I can’t agree with you. I don’t believe that.
- •How to prepare for chemistry lab *
- •Thermometer scales
- •Выбираем термометр
- •In my opinion. As far as I know. I believe/suppose. It is said that.
Time for fun
A Good Cook
Young wife: “Do you think I’m a good cook, darling?”
Husband: “I think you are perfect”.
Wife: “Which of my dishes do you like best?”
Husband: “Tinned lobsters”.
* * * *
When was Rome built?
At night.
Who told you that?
You did. You said Rome wasn’t built in a day.
* * * *
But I don’t think I deserve an absolute zero.
Neither do I, but it’s the lowest mark that I am allowed to give.
* * * *
I didn’t know you were interested in chemistry.
I am not. This is my wife’s dressing table.
* * * *
A doctor’s advice
A doctor was much annoyed by his patient’s habit to stop him in the street and ask his medical advice free of charge. At last he decided to put a stop to this practice.
One day a patient stopped him and exclaimed, “Oh, doctor, I’m so glad to see you; I have such a severe pain in my side”.
The doctor showed great concern and said: “Shut your eyes; now show me your tongue”. Then he went away, leaving his patient standing in the street with his tongue out.
to annoy – надоедать; free of charge – бесплатно; i’ve such a severe pain – у меня такая ужасная боль; to show great concern – проявлять большое участие. |
Part iii
Vocabulary Learning
Exercise 1. Words to be remembered:
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liquid [lıkwıd] n. – жидкость, а. – жидкий; |
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reagent [ri:'eɪʤənt] n. – реактив, реагент; |
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potassium [pə'tæsɪəm] n. – калий; |
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ammonium [ə'məunɪəm] n. – аммоний; |
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sodium ['səudɪəm] n. – натрий; |
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alkali ['ælk(ə)laɪ] n. – щёлочь; |
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nitric ['naɪtrɪk] acid – азотная кислота; |
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sulphuric [sʌl'fjuərɪk] acid – серная кислота; |
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hydrochloric ['haɪdrə'klɒrɪk] acid – соляная кислота, хлористоводородная кислота; |
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methylene green ['mɛθɪli:n 'gri:n] – метиленовый зелёный; |
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methylene blue ['mɛθɪli:n ' blu:] – метиленовый синий; |
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phenolphthalein [,fi:nɒl '(f)θali:n, - '(f)θeɪl-] – фенолфталеин; |
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mercury ['mɜ:kjərɪ] n. – ртуть; ртутный столб, температура или давление. |
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test-tube [´test´tju:b] n. – пробирка; |
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flask [flα:sk] n .– колба; volumetric [,vɔlju´metrık] flask – мерная колба; |
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glass [glʌ:s] n. – стакан; measuring glass [´meʒərıŋ´glα:s] – мензурка; glass cap [´glα:s´kæp] – стеклянная крышка; |
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pipette [pı´pet] n. – пипетка; |
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funnel [´fʌnl] n. – воронка; |
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glassware [´glα:swεə] n .– стеклянная посуда; |
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retort [rı´tɔ:t] n .– реторта; |
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graduated cylinder [´grædjueıtıd ´sılındə] – мерный цилиндр; |
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burette [bjuə´ret] n. – бюретка; |
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beaker ['bi:kə] n. – лабораторный стакан, мензурка. |
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separation [,sep(ə)'reɪʃ(ə)n] n. – отделение, разложение на части; |
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rack [ræk] n. – полка (узкая); |
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shelf [ʃelf] n. – полка, pullout ~ выдвижная полка, lipped ~ выступающая полка; |
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water supply [´wɔ :təsə´plaı] n. – водопровод; |
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running water – проточная вода; |
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instrument [´ınstrumənt] n. – прибор; |
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tool [tu:l] n. – инструмент; |
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stand [´stænd] n. – штатив; |
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balance [´bæləns] n. – весы; |
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steam [sti:m] n. – пар; |
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burner [´bə:nə] n. – горелка; |
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scale [skeır] n. – шкала; |
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device [dɪ'vaɪs] n. – приспособление; |
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stopcock ['stɔpkɔk] n.– запорный кран, пробка; |
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stopper ['stɔpə] n. – пробка, затычка. |
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wastes n. – отходы, industrial a. – промышленный; |
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steam [sti:m] n. – пар, дым; |
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accessory [ək'ses(ə)rɪ] a. – вспомогательный; |
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weigh [weı] v. – взвешивать; |
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weight [weıt] n. – вес; |
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record [rı´kɔ:d] v. – регистрировать; |
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obtain [əb´teın] v. – получать; |
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supply [sə´plaı] v. – снабжать; |
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clamp [klæmp] v. – скреплять; |
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melting-point [´meltıŋ´pɔınt] n. – точка плавления; |
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boiling-point [´bɔılıŋ´pɔınt] n. – точка кипения; |
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amount [ə´maunt] n. – количество; |
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dissolve [dı´zɔlv] v. – растворять (ся); |
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findings [´faıdıŋz] n. – данные; |
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require [rı´kwaıə] v. – требовать; |
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measure [´meʒə] v. – измерять; |
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accurate ['ækjərət] a .– точный; |
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contamination [kən:tæmɪ'neɪʃ(ə)n] n. – загрязнение; |
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under the supervision – под руководством; |
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safety ['seɪftɪ] n. – безопасность, сохранность; |
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datum ['deɪtəm] (pl. data) – данная величина, данное; элемент данных; исходный факт; исходный уровень; характеристика; |
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calculation [,kælkju'leɪʃ(ə)n] n. – вычисление; подсчёт, расчёт; |
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complete [kəm'pli:t] v. – заканчивать, завершать, комплектовать, укомплектовывать. |
Exercise 2. Read the words of Latin and Greek origin and translate them.
Special ['speʃ(ə)l], laboratory [lə'bɔrət(ə)rɪ], ventilate ['ventɪleɪt], group [gru:p], analysis [ə'næləsɪs], cylinder ['sɪlɪndə], pipet [pɪ'pet], accurate ['ækjərət], experiment [ɪk'sperɪmənt], apparatus [,æp(ə)'reɪtəs], instrument ['ɪn(t)strəmənt], thermometer [θə'mɔmɪtə], accessory [ək'ses(ə)rɪ], material [mə'tɪərɪəl], reaction [rɪ'ækʃ(ə)n], separation [,sep(ə)'reɪʃ(ə)n], basic ['beɪsɪk], function ['fʌŋkʃ(ə)n], category ['kætəg(ə)rɪ], concept ['kɔnsept], component [kəm'pəunənt], procedure [prə'si:ʤə].
Exercise 3. Form the derivatives from the next words:
Model: |
measure, measurment, measuring. |
Measure, volume, pharmacy, practice, chemist, equip, find, contaminate, boil, melt, determine, react, separate, clean, heat, adjust, work, harm, tube, glass, flask, burn, observe, generate.
Exercise 4. Make up word combinations and translate them into Russian.
to make |
observations discoveries inventions experiments tests sure |
scientific |
methods laws studies theories research achievements breakthrough |
to do |
research lessons one’s work smb. good harm |
accurate |
measuring weight findings calculations analysis instrument |
to perform |
order promise experiment role play |
safety |
glass lamp equipment rules |
to take |
measurements temperature exams (credit-tests) for granted |
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Exercise 5. Make up the word combinations:
Practical, chemical, harmful, unpleasant, analytical, general, special, molecular, quantitative, greatest, essential, digital, graduated, accurate, efficient, basic, laboratory, working.
Conditions, classes, reaction, substances, accessories, odor, materials, work, thermometer, pipet, equipment, measurement, apparatus, accuracy, use, weight, analysis, glassware.
Exercise 6. Translate the next word combinations:
Different reactions; chemical substances; a room for carrying out experiments; a room for weighing; a room for storing substances; to ventilate a room; equipment of a laboratory; to carry out volumetric analyses; to measure a volume; accurate measuring; greatest accuracy; a specific volume; essential equipment; heating equipment; basic materials; laboratory accessories; non-essential things; steam-heated devices; to improve working conditions; to avoid injuries; the laboratory safety equipment; to influence the research work; melting-point; boiling-point; solidifying-point, quantitative analysis digital instruments.
Exercise 7. Answer the questions using the suitable alternatives.
Which of these instruments (apparatuses) are used for measuring?
a) a pipette; b) a thermometer; c) a test-tube; d) a volumetric flask.
Which of these glassware are most widely used by pharmaceutical students during experiments?
a) test-tubes; b) retorts; c) funnels; d) flasks; e) burettes; f) pipettes; g) graduated cylinders.
Which of these are generally available for the students in the chemical laboratory?
a) slides; b) buffer solutions; c) alkali; d) scales; e) scissors; f) litmus; g) microscope; h) distillators. |
Exercise 8. State what part of speech the underlined words belong to and translate the sentences into Russian.
1. Oxygen is a light gas. 2. Nuclear energy may be used to heat and light our homes. 3. Oxygen may support combustion. 4. I hope to have your support. 5. Oxygen can be found in the free state as well as in the combined form. 6. He could state the facts very clearly. 7. The word “law” means закон. 8. There are no means retarding this process. 9. We were making the experiment by means of chemical substances. 10. What is your mark in English? 11. What are the qualities that mark an atom? 12. Pure sulphuric acid is the only liquid without odor at common temperature and of a very acid taste 11. We may prepare ammonia in the laboratory. 13. In their laboratory work students used test-tubes, graduated glasses and other glassware. 14. Nitrogen forms several compounds with hydrogen the most important of which is ammonia. 15. There are other forms of sulphuric acid, one of which is known under the name of fumic acid. 16. Liquid air can be kept for a long time in glass vessels. 17. Don’t use this glass, it will break easily.
Part Iv
Reading Comprehension
Read and translate text 1.
Text 1