NATURE AND SCOPE OF CHEMISTRY

 

 

NATURE AND SCOPE OF CHEMISTRY

Chemistry. It is the branch of science which deals with the composition, preparation and properties of the substances.

Main branches of chemistry: (1) Inorganic chemistry (2) Physical chemistry (3) Organic chemistry (4) Biochemistry (5) Analytical chemistry (6) Agricultural chemistry (7) Industrial chemistry.

Scientific Methods : The scientific method consist of the following five steps :

1 –  To accumulate information through observation

2 –  To organize this information and to seek regularities in it.

3 –  To wonder why regularities are there.

4 –  To frame hypothesis, theories and laws.

5 – To communicate the knowledge to others.

Law: It is a brief statement that can be accepted as general truth.

Hypothesis: It is a provisional conjecture (based upon available data) to explain the known facts about a phenomenon.

Theory: Theory is the result of testing and retesting the hypothesis by experiments under different conditions.

Role of Chemistry: The role of chemistry can be summarized as below :

1 –  Population explosion: Chemistry has solved this growing population by new birth controlling drugs.

2 –  Food for millions: Chemists have developed new fertilizers such as urea etc. and effective insecticides such as DDT for better agriculture.

3 –  Treatment of diseases: Chemists have saved man from dreadful diseases such as malaria, T.B ., Typhoid. They have produced wonderful drugs like penicillin, vitamins, hormones etc.

4 –  Environmental pollution: Chemist are dedicated in devising new methods for checking air and water pollution.

5 –  Energy resources. The chemists are trying to exploit new sources of energy like sea, air etc. meet the demand of energy.

Father of chemistry: Robert Boyle.

Founder of modern chemistry: Lavoisier.

 

 

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