CH 1 LANGUAGE OF CHEMISTRY

A symbol is the short form that stands for the atom of a specific element or the abbreviation used for the name of an element.

A molecule is the smallest particle that has has the capability to exist independently.

The elements having eight atoms in their molecules , e.g. S8 .

The elements having four atoms in their molecules , e.g. P4 .

The elements having three atoms in their molecules, e.g. ozone ( O3) .

The elements having two atoms in their molecules , e.g. H2.

The elements having only one atom in their molecules .

The number of atoms in a molecule of an element is called its atomicity .

An atom is the smallest particle of an element which may or may not exist independently but can take part in a chemical reaction .

A pure substance is the one which is made up of mlecules containing same kind of atoms .