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17
II. Answer the questions to the text:
1. Do you know what science is concerned with the composition of
substances and their transformations?
2. What does the science of chemistry constitute today?
3. What does the chemical industry produce?
4. Who discovered the Periodic Law?
IV. Retell the text.
18
TOPIC 5
I. Read and translate the text.
ORGANIC CHEMISTRY
The field of chemistry is now a very large one. There are more than
30 different branches of chemistry. Some of them are inorganic chemis-
try, organic chemistry, physical chemistry, analytical chemistry, pharma-
ceutical chemistry, nuclear chemistry, industrial chemistry, colloidal
chemistry, electrochemistry, magneto chemistry, and biochemistry.
Inorganic chemistry is the study of all substances except the hy-
drocarbons and their derivatives.
Physical chemistry. This part of chemistry is closely linked with
physics.
Electrochemistry is concerned with the relation between electrical
energy and chemical change.
Magneto chemistry is the study of behavior of a chemical sub-
stance in the presence of a magnetic field.
Biochemistry. Biochemist works on the boundaries between biol-
ogy and chemistry.
Organic chemistry. It is the study of the compounds of carbon. The
name “organic” evolved from the theory that any material derived from
any living organism required a “vital force” identified with live itself. All
other compounds were considered to be of mineral origin. They were
termed “inorganic”. The organic compounds were thought to be utterly
complex and impossible to synthesise in the laboratory.
In 1828 Fr. Wohler, a German scientist, made an “organic” sub-
stance using a simple laboratory process. Today over 500 000 (five hun-
dred thousand) different organic compounds have been isolated of syn-
thesized. The number of possible compounds is extremely large.
Organic compounds can form isomers. Isomers are different com-
pounds containing the same elements in the same proportions. Thus a
study of organic chemistry would be extremely complex, except for the
orderly manner of arrangement and comparison of the various possible
classes of compounds.
The field of organic chemistry is usually broken down intro three
divisions, namely: 1) aliphatic, 2) aromatic, 3) heterocyclic.
II. Answer the questions to the text: TOPIC 5
1. Do you know what science is concerned with the composition of
I. Read and translate the text.
substances and their transformations?
2. What does the science of chemistry constitute today?
ORGANIC CHEMISTRY
3. What does the chemical industry produce?
4. Who discovered the Periodic Law? The field of chemistry is now a very large one. There are more than
30 different branches of chemistry. Some of them are inorganic chemis-
IV. Retell the text. try, organic chemistry, physical chemistry, analytical chemistry, pharma-
ceutical chemistry, nuclear chemistry, industrial chemistry, colloidal
chemistry, electrochemistry, magneto chemistry, and biochemistry.
Inorganic chemistry is the study of all substances except the hy-
drocarbons and their derivatives.
Physical chemistry. This part of chemistry is closely linked with
physics.
Electrochemistry is concerned with the relation between electrical
energy and chemical change.
Magneto chemistry is the study of behavior of a chemical sub-
stance in the presence of a magnetic field.
Biochemistry. Biochemist works on the boundaries between biol-
ogy and chemistry.
Organic chemistry. It is the study of the compounds of carbon. The
name “organic” evolved from the theory that any material derived from
any living organism required a “vital force” identified with live itself. All
other compounds were considered to be of mineral origin. They were
termed “inorganic”. The organic compounds were thought to be utterly
complex and impossible to synthesise in the laboratory.
In 1828 Fr. Wohler, a German scientist, made an “organic” sub-
stance using a simple laboratory process. Today over 500 000 (five hun-
dred thousand) different organic compounds have been isolated of syn-
thesized. The number of possible compounds is extremely large.
Organic compounds can form isomers. Isomers are different com-
pounds containing the same elements in the same proportions. Thus a
study of organic chemistry would be extremely complex, except for the
orderly manner of arrangement and comparison of the various possible
classes of compounds.
The field of organic chemistry is usually broken down intro three
divisions, namely: 1) aliphatic, 2) aromatic, 3) heterocyclic.
17 18
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