CHE 101 Chapter Notes - Chapter 12: Redox, Electrochemistry, Electric Current
Document Summary
Electrochemistry is the branch of chemistry which deals with the chemical changes caused in the matter by passage of electric current and conversion of chemical energy into electrical energy and vice versa. Substances around us can be divided into two classes based on their ability of conduct electricity: Non-conductors: those substances which do not allow electric current to pass through them are called non-conductors or insulators. Conductors : those substances which allow electric current to flow through tem are called conductors. Examples: copper, iron, gold, silver, graphite, salt solution etc. Conductors can further be divided into two groups. Metallic conductors : these conductors conduct electricity or electric current by movement of electrons without undergoing any chemical change during the process. These conduct electricity in both solid as well as molten state. Electrolytes : those substances which conduct electricity only when they are present in aqueous solution and not in solid form are called electrolytes.
