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Vertically:

1) a white powder or colourless crystalline solid, consisting mainly of sodium chloride; 2) a common light yellow chemical substance that burns with a very strong unpleasant smell, and is used in drugs, explosives, and industry; 3) any substance that dissociates in water to yield a sour corrosive solution containing hydrogen ions, having a pH of less than 7, and turning litmus red; 4) a malleable ductile silvery-white ferromagnetic metallic element widely used for structural and engineering purposes.

2. Answer the questions.

1. What fruits and vegetables contain the enzyme called polyphenol oxidase? 2. What happens (chemically) when we cut a fruit? 3. What colour is rust? 4. Does rusty cutlery affect the rate of the oxidation? 5. How can the process of fruit oxidation be prevented?

3. Find the definitions of each of the following words:

1) rust

a) the reaction of a substance with oxygen or another oxidizing agent;

2) sulfur dioxide

b) to combine with oxygen (iron rust because it is oxidized by exposure to the air;

3) to preserve

c) a colorless odorless gaseous chemical element that is found in the air;

4) oxidation

d) a reddish brown color;

5) to oxidize

e) a heavy pungent toxic gas that is used esp. in bleaching, as a preservative, and as a refrigerant, and is a major air pollution;

6) oxygen

f) to keep from decaying, e.g. to process food to prevent spoilage.

4. Fill in the gaps with the words from the text using the appropriate form: to prevent, amount, available, surface, to contain, to reduce, to increase.

1. This medicine is ___ only on doctor’s prescription.

2. Lately, the number of telephone calls has ___ dramatically.

3. A stumble may ___ a fall.

4. Serious efforts should be made to ___ unemployment.

5. His essay ___ many faults in grammar.

6. This company doubles the ___ of gas deliveries each year.

7. Many animal and plant species have vanished from the ___ of the globe for ever.

Grammar Practice

1. Change the prepositionless terminological complexes into the prepositional ones. Translate them into Ukrainian.

Carbon monoxide, hydrogen chloride, nitrogen oxide, zinc chloride, sulfur dioxide, manganese dioxide.

2. Find all the occurrences of the Passive Voice in the text and define the tense of the predicate.

3. Find all the words ending in -s in the text. Put them into two lists: 1) Plural of the Noun; 2) Present Indefinite form of the Verb (3rd person).

7. Is There Really a Chemistry of Love?

love potion

любовний напій

pounding heart

сильне серцебиття

attraction

привабливість

infatuation

палка закоханість

raw

істинний

meanwhile

тим часом

lust

пристрасть

benefit

перевага

sweaty palms

пітні долоні

infidelity

невіра, недовір’я

to blame

звинувачувати

suppression

стримування

to abandon

відмовитися від

to seek

шукати

I don’t think there are any magic love potions that you can use to make someone fall in love, but chemistry does play an important role in how a relationship progresses. First, there’s attraction. Nonverbal communication plays a big part in initial attraction and some of this communication may involve pheromones, a form of chemical communication. Did you know that raw lust is characterized by high levels of testosterone? The sweaty palms and pounding heart of infatuation are caused by higher than normal levels of norepinepherine. Meanwhile, the “high” of being in love is due to a rush of phenylethylamine and dopamine. All is not lost once the honeymoon is over. Lasting love confers chemical benefits in the form of stabilized production of serotonin and oxytocin. Can infidelity be blamed on chemistry? Perhaps, in part. Researchers have found that suppression of vasopressin can cause males (voles, anyway) to abandon their love nest and seek new mates. Hey, you gotta have chemistry!

Speech patterns

In part (partially, partly)

частково

This alloy is made in part (partly) of base metals.

Цей сплав частково складається з неблагородних металів.

You gotta have (you got to have)

Ви повинні мати …

You gotta have chemistry!

Ви обов’язково повинні мати хімію!

1. Do you agree that there really exists a chemistry of love? Give your arguments.

2. Make dialogues of two friends based on the text.

3. Find in the text and give the definitions of the following words:

attraction, relationship, infatuation, a honeymoon, lust.

Grammar Practice

1. Change the following sentences from active to passive voice making disjunctive or general questions.

1. You can’t use magic love potions to make someone fall in love.

2. Chemistry can play an important role in the relationship.

3. Some of nonverbal communication may involve pheromones.

4. High levels of testosterone characterize raw lust.

5. High levels of norepinepherine can cause the sweaty palms and pounding heart.

2. Find all the introductory words in the text. What other words with the same function do you know?

3. Find all the occurrences of the verb “to doin the text. Define their functions.

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