1.Сделайте анализ предложений, найдите в них причастия, герундии и обороты с ними. Переведите предложения на русский язык.

1. Oxygen is a highly reactive substance, readily combining with many other elements in the process of oxidation.

2. Using different methods chemists isolated and identified about six million substances.

3. In the laboratory work the students used test-tubes,  graduating cylinders and other glassware.

4. Hydrochloric acid if not used with great care may cause burns.

5. The vapour pressure of a liquid becoming equal to atmospheric pressure, the liquid boils.

6. Sometimes, preparing substances requires less skill than keeping them.

7. Solid bodies have the property of keeping their shape without supporting of a vessel.

8. Upon being heated, the molecules begin moving very quickly.

9. Without being treated this substance cannot be used.

10.  Any moving object is able to do work, the quantity of kinetic energy depending on its

mass and velocity.

2.Научитесь произносить следующие термины и выучите их значения:

chemical laboratory, laboratory vessels, harmful substances, harmful substances, reagents, acids (nitric, sulphuric, hydrochloric), alkali (ammonium solution, potassium solution, sodium solution), oxides, inorganic salts, indicators (phenolphthalein, methylene green), glassware for general use, glassware for special use, and glassware for measuring, test-tubes, funnels, flasks, graduated cylinders, burettes, graduated flasks, measuring glasses, pipettes, molecular weight, melting- point, boiling-point, freezing-point

3.Переведите следующие слова и словосочетания на русский язык и выучите их: 

To be equipped with; to be performed; under the supervision; to be divided into; to be used for; to be recommended; should be clean; to be required; to be affected by; to carry out; to be well ventilated

5.Прочитайте вслух и переведите письменно следующий текст:

In the Chemical Laboratory

The chemical laboratory is a place where you can perform the reactions that you had learnt in the books or heard in lectures. The students of the chemical technology and pharmaceutical faculty often have practical classes in chemistry in the chemical laboratory. There they carry out various experiments, work with different chemical substances. The chemical laboratory consists of several rooms: a room for storing the necessary substances, a room for recording the obtained findings and a room for washing laboratory vessels. These rooms are large and light, well ventilated because chemists often work with harmful substances that have a strong and unpleasant odor .A good chemical laboratory is fully equipped with the basic measuring and analytical apparatuses that give a good opportunity to study all the branches of chemistry. However all experiments should be performed under the supervision of the lab instructor only. The laboratory is equipped with special tables which are higher than usual ones. On each of the tables one can see shelves and racks with laboratory vessels and glassware of all kinds, some of them are empty, while others contain the reagents. The most widely used reagents which are available at every laboratory are: acids (nitric, sulphuric, and hydrochloric); alkali (ammonium solution, potassium solution, sodium solution); oxides, inorganic salts, indicators (phenolphthalein, methylene green).Reagents which are used in large amounts are supplied in big boxes or bottles. Reagents which are seldom used are supplied in amounts up to 10 or 11g or even less.....
 

6.Найдите в тексте английские эквиваленты для следующих русских словосочетаний. Упражнение следует выполнить письменно:

Выполнять различные эксперименты, полученные данные, работать с химическими веществами, хорошо проветриваемая комната, сильный и неприятный запах, лабораторная посуда всех видов, специальные сосуды, измерять специфический объем, основное (вспомогательное) оборудование, сохранять рабочее место в чистоте, закрывать бутылки стеклянными крышками

7.Заполните пропуски  предложенными глаголами в соответствующей форме. Упражнение следует выполнить письменно:

to perform, to recommend, to allow, to equip, to use, to include, to divide, to influence.

1.A good chemical laboratory is ...with the basic measuring and analytical apparatuses.2.All the experiments should be ...under the supervision of the lab instructor.3.The laboratory vessels and glassware are ...into three groups.4.Special glassware ...things necessary for carrying out different analyses.5.Burettes are ...for very accurate measurements of volume.6.Graduated pipettes ...for very accurate liquid measurements.7.Certain tools and instruments do not directly ...the research work in a laboratory.8.It is ... to close the glass bottles with glass caps to prevent their contamination from air.

8.Переведите следующие предложения на английский язык письменно:

На полках в химической лаборатории можно видеть все необходимые для опытов реактивы. 2. Во время работы в лаборатории студенты часто используют стеклянную посуду всех видов. 3. Комнаты лаборатории должны хорошо проветриваться, т.к. химики часто работают с вредными веществами, имеющими неприятный запах.4. Хорошая химическая лаборатория полностью оснащена основными измерительными приборами и инструментами. 5. Вспомогательное оборудование используется для улучшения условий работы в лаборатории. 6. Работа в химической лаборатории требует знаний об условиях проведения эксперимента и соблюдения определенных правил