Question

Science can be viewed as a continuing human effort to
systematise knowledge for describing and understanding
nature. You have learnt in your previous classes that we come
across diverse substances present in nature and changes in
them in daily life. Curd formation from milk, formation of
vinegar from sugarcane juice on keeping for prolonged time
and rusting of iron are some of the examples of changes which
we come across many times. For the sake of convenience,
science is sub-divided into various disciplines: chemistry,
physics, biology, geology, etc. The branch of science that
studies the preparation, properties, structure and reactions
of material substances is called chemistry.
ST​

Answer 1

Answer:

Chemistry is the science of molecules and their

transformations. It is the science not so much of the one

hundred elements but of the infinite variety of molecules that

may be built from them.

Roald Hoffmann

Science can be viewed as a continuing human effort to

systematise knowledge for describing and understanding

nature. You have learnt in your previous classes that we come

across diverse substances present in nature and changes in

them in daily life. Curd formation from milk, formation of

vinegar from sugarcane juice on keeping for prolonged time

and rusting of iron are some of the examples of changes which

we come across many times. For the sake of convenience,

science is sub-divided into various disciplines: chemistry,

physics, biology, geology, etc. The branch of science that

studies the preparation, properties, structure and reactions

of material substances is called chemistry.

DEVELOPMENT OF CHEMISTRY

Chemistry, as we understand it today, is not a very old

discipline. Chemistry was not studied for its own sake, rather

it came up as a result of search for two interesting things:

i. Philosopher’s stone (Paras) which would convert

all baser metals e.g., iron and copper into gold.

ii.‘Elexir of life’ which would grant immortality.

People in ancient India, already had the knowledge of many

scientific phenomenon much before the advent of modern

science. They applied that knowledge in various walks of

life. Chemistry developed mainly in the form of Alchemy

and Iatrochemistry during 1300-1600 CE. Modern

chemistry took shape in the 18th century Europe, after a

few centuries of alchemical traditions which were

introduced in Europe by the Arabs.

Explanation:

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