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Branches of chemistry

The speciality of chemistry

I decide to be a teacher of chemistry because I like this subject from school. Chemistry is a difficult but very interesting science. All material things in the world are composed of different combinations of about 100 different elements. An element is a substance that cannot be broken down into simpler substances.

Telling about chemistry it is necessary to say about D.I.Mendeleyev. Mendeleyev was a chemist of genius, first-class physicist, a fruitful researcher in the fields of hydrodynamics, metereology, geology, who created a table or chart that listed the known elements according to increasing of atomic weights. He worked on the theory and practice of protectionist trade and on agriculture.

Chemistry

Chemistry is the science which deals with materials, their properties and the transformations they undergo.

Chemistry is an experimental and theoretical study of the composition of matter. All forms of matter consist of pure substances or mixtures. Elements are the building blocks of matter. Compounds are combination of elements.

Every substance has physical and chemical properties. Physical properties include colour, smell, solubility, density, hardness and boiling and melting points. Chemical points include behavior with other materials.

Matter exists in three states: the solid, the liquid and the gaseous state. A substance can be transformed from one state to another under the changes of its temperature.

Trade the Chemist II

A chemist is a scientist trained in the study of chemistry. Chemistry study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms. Chemists carefully measure substance proportions, reaction rates, and other chemical properties.

As the science chemistry has begun the procession in the middle of XVII century. Its founder great English chemist Robert Bojlya is considered. The scientist – the author of known gas law Boyal-Mariota. Chemistry as we know it today, was invented by Antoine Lavoisier with his law of Conservition of mass in 1783.

 

Branches of chemistry

Chemistry typically is divided into several major sub-disciplines:

Analytical chemistry is the analysis of material samples to gain an understanding of their chemical composition and structure.

Biochemistry is the study of the chemicals, chemical reactions and chemical interactions that take place in living organisms.

Inorganic chemistry is the study of the properties and reactions of inorganic compounds. It is also the study of atomic and molecular structure and boiling.

Physical chemistry is the study of physical fundamental basis of chemical systems and processes. Important areas of study include chemical thermodynamics, chemical kinetics, electrochemistry, quantum chemistry and spectroscopy.

Medicinal chemistry is the science involved with designing, synthesizing and developing drugs.



Organic chemistry is the study of the structure, properties, composition and chemical reaction of organic compounds.

 


Date: 2015-12-17; view: 1573


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