Introduction to Chemistry

Chemistry

It is the branch of science which deals with the composition, structure and properties of matter.

Antoine Laurent Lavoisier is called the father of chemistry.

Branches of Chemistry

In addition to these biochemistry, war chemistry, nuclear chemistry forensic chemistry, earth chemistry etc., are other branches of chemistry.

Matter

Anything which occupies some space and have some mass is called matter. It 15 made up of small particles which have space between them. The matter particles attract each other and are in a state of continuous monon.

Elements

It is the simplest form of pure substance, which can neither be decomposed into nor built from simpler substances by ordinary physical and chemical methods. It contains only one kind of atoms. The number of elements known till date is 118.

[Hydrogen IS the most abundant element in the universe.

OXYgen (46.6%), a non-metal, is the most abundant element in the earth crust.

AI is the most abundant metal in the earth crust.

An element can be a metal, a non-metal or a metalloid.]

Symbols

A symbol is an abbreviation or shortened form for the full name of an element. The present system of symbols was introduced by Berzelius.

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