Wednesday, May 21, 2014

Elements and compounds

What is an element?

According to modern view, in simpler terms, an element can be defined as a substance made up of atoms of same atomic number.
For example, hydrogen gas, H2 is an element since the atoms in it have the same atomic number i.e. 1. 
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A chemical compound consists of two are more different types of atoms. For example, water is a compound made up of hydrogen and oxygen. Its formula is H2O i.e., there are two hydrogen atoms per every oxygen atom.

Monday, May 19, 2014

Electrolysis at adichemistry

Electrolysis involves dissociation (lysis) of an electrolyte by using a direct electric current.  In this process, electrical energy is used to carryout a non-spontaneous redox chemical reaction. 
The setup used to serve this purpose is known as electrolytic cell.
Read more at: 
http://www.adichemistry.com/physical/electrochemistry/electrolysis/electrolysis.html

electrolytic cell - a schematic representation