In physics, to put the definition very simply, plasma is a fourth state of matter that comes after solid, liquid and gases. The state of plasma is achieved when gas or gases are heated to the extent that the atoms of the gas lose all electors. The resultant quasi-gas is a collection of nuclei and electrons that are free. The nuclei which has lost all the electrons are deemed to be ions, that is, they are electrically charged, to a substantial extent. The entire collection is thus, electrically charged and conductive. The basic process that takes place in formation of plasma is quite simple. When heated, energy gets pumped into the gas. This causes that gas to disassociate itself from its molecules and take the form of atoms, which further loose their negatively charged electrons. The atoms themselves retain positive charge and are thus, deemed to be positive ions.
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