Saturday, 30 May 2015

WHAT IS AN ATOM?

The word ATOM from ancient Greek means indivisible. It is used to describe the smallest particle of any substance. It is considered to be the basic unit of simple substances or elements.

An atom is the smallest particle of an element which can take part in a chemical reaction. It is the smallest part of an element that can exist, and still possess the chemical properties of that element.

All atoms are represented by symbols.

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