Define the parts of speech and translate them without a dictionary

Translate and memorize the following words.

UNIT II CHEMISTRY LABORATORY AND EXPERIMENTS

Match the words and word-combinations in A with their Russian equivalents in B

1. simple diatomic molecules	a. двухатомные ковалентные молекулы
2.diatomic covalent molecules	b. более электрополжительный элемент
3. molecules containing unlike elements	c. простые двухатомные молекулы
4. the number of atoms of each element	d. количество атомов каждого элемента
5. the more elektro- positive element.	e. молекулы, содержащие различные элементы

18. Form the antonyms with the help of the prefixes “de-“, “in-“, “dis-“, “un-“, “im-“, “ex-“:

cover, increased, organic, charge, possible, include, reversible.

Grammar: There be, Modals

The Indefinite Pronouns

Text: Laboratory

escape	flask	funnel
pour	balance	glassware
ignite	crucible	odour
weigh	drawer	measure
provide	device	light
evaporate	burette	heat
serve	beaker	employ

to weigh – weighing – its weight – weightless – weightlessness – weighty; to measure – measure – measurement; define – definition – definite – indefinite – definitely; evaporate – evaporation – vapour(vapor); simple – simply – simplicity – simplify – simplification; to vary – variation – variety – various – variable; ignite – ignition.

3. Read and translate the following word combinations:

ventilating hood, weighing bottles, hydrogen chloride, hydrochloric acid, sulphuric acid, sodium chloride, suffocating odour, sodium acid, sulphate nitric acid, sodium nitrate.

Study the following chart:

There is	a some	bulb paper	on the bench in the box
There are	some	papers	on the desk

There is	no	paper	in the box
There are	no	papers	on the desk
There isn’t	a any	bulb paper	on the bench in the box
There aren’t	any	papers	on the desk

Is there	a bulb any acid	on yourbench? in the bulb?
Are there	any acids	on the shelf?

4. Fill in the gaps with the verb “to be” in the correct form:

1. There … many pipes in the drawer. 2. There … some chalk in the box. 3. There … not any acid in the tube. 4. There … no tubes in the state. 5. There … some tools on that shelf. 5. … there any glassware for the next experiment? 6. There … not any samples in the safe. 7. There … some lead in this ore. 8. There … a flask, a pipette, a funnel and a burner on the bench for each student. 9. … there a crucible in that drawer before our practice? – No, there … any. 10. There … much practical work tomorrow. 11. … there any students in the lab yesterday? – Yes, there … only five.

5. Form the words with the preffix “self” and translate them.

Model: control – self-control

ionization, oxidation, ignition, monitoring, purification, regulation.

6. Translate into Russian:

1. В нашем городе несколько Университетов и Академий. 2. В Университете действуют 10 факультетов и 5 Институтов. 3. На нашем факультете действуют несколько лабораторий. 4. В лаборатории много химической посуды и приборов. 5. На стене висит Периодическая таблица Менделеева и таблица растворимости (solubility). 6. У студентов химического факультета много лабораторных занятий. 7. На полках стоят колбы, пробирки, мензурки. 8. В сейфе хранятся концентрированные кислоты и некоторые щелочи. 9. Экспериментальный образец находится в верхнем ящике. 10. Завтра будет встреча со специалистами ведущей лаборатории. 11. В соседней лаборатории есть электронные весы? 12. Вчера была лекция по неорганике?

Compare the Indefinite Pronouns translate these word-combinations correctly:

manysolutions (acids, metals)	muchsolution (acid, metal)
fewalkalis (ores, solvents)	littlealkali (ore, solvent)
a fewsamples of water (air, substance)	a littlewater (air, substance)

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