Учебно-методическое пособие по английскому языку для вузов. Кислякова Н.В - 8 стр.

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8
UNIT 3
Pre-reading activities
I. Match the following Russian words with their English equivalents.
cоединение, смесь solvent
нерастворимый solution
химический символ to break down
вещество bond
раствор wastes
питательные вещества chemical symbol
связь insoluble
растворимый nutrients
основание, основа substance
свойства absorb
кислота properties
растворитель compound
отходы, продукты распада acid
поглощать base
расщепляться soluble
Reading
II. Read and translate the text.
Basic chemistry
Matter is something that has a mass and takes up space. Matter is composed
of one or more elements. An element is a chemical unit that can`t be broken
down. Each element is represented by a chemical symbol and has a set of
properties that distinguishes it from other elements. All elements are made of
atoms. An atom is the smallest particle of an element that retains the
characteristics of that element. All elements combine to form different
substances with new properties. Such substances made from elements combined
chemically are called compounds.
The process by which elements react to form new compounds can be
described as chemical reaction. There are two types of chemical reactions. In
some reactions the breaking of bonds absorbs more energy, in others the
breaking of bonds absorbs less energy.
Most chemical reactions occur more easily when the reacting substances
are in water solution. Water is a key component of cells and provides the
medium through which nutrients enter and wastes exit a living cell. 
                                      UNIT 3

Pre-reading activities
I. Match the following Russian words with their English equivalents.


cоединение, смесь                             solvent
нерастворимый                                 solution
химический символ                             to break down
вещество                                      bond
раствор                                       wastes
питательные вещества                          chemical symbol
связь                                         insoluble
растворимый                                   nutrients
основание, основа                              substance
свойства                                      absorb
кислота                                        properties
растворитель                                  compound
отходы, продукты распада                       acid
поглощать                                      base
расщепляться                                   soluble


Reading
II. Read and translate the text.

                                   Basic chemistry

   Matter is something that has a mass and takes up space. Matter is composed
of one or more elements. An element is a chemical unit that can`t be broken
down. Each element is represented by a chemical symbol and has a set of
properties that distinguishes it from other elements. All elements are made of
atoms. An atom is the smallest particle of an element that retains the
characteristics of that element. All elements combine to form different
substances with new properties. Such substances made from elements combined
chemically are called compounds.
   The process by which elements react to form new compounds can be
described as chemical reaction. There are two types of chemical reactions. In
some reactions the breaking of bonds absorbs more energy, in others the
breaking of bonds absorbs less energy.
      Most chemical reactions occur more easily when the reacting substances
are in water solution. Water is a key component of cells and provides the
medium through which nutrients enter and wastes exit a living cell.
                                          8

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