An electrolytic cell decomposes chemical compounds by means of electrical energy, in a process called electrolysis; the Greek word lysis means to break up.
electrolysis is to decompose a compound to its elements.
Tuesday, January 18, 2011
How To Make Lemon Battery?
Did you know when we study about electrochemistry we can apply it to make a lemon battery....but how to make it?this video will show you the way.....just click the start button then good luck!!!!!!!!!
Monday, January 17, 2011
...VOLTAIC CELL / GALVANIC CELL....
How Does The Galvanic Cell Work?
this example is using.........
anode electrode - zinc metal
cathode electrode - copper metal
salt bridge - KCl (aq)
ELECTROCHEMICAL
Electrochemical Cells
1. Voltaic cell
-use spontaneous reation to generate electrical energy
-system does not work on sourroundings.
2. Ectrolytic cell
-uses electrical energy to drive non spontaneous reaction
-sourrounding do work on system
Oxidation?...Reduction?.....Redox Reaction?.....
oxidation - the loss of electons by species, accompanied by increase in oxidation number.
reduction - the gain of electrons by a spesies,accompanied by a decrease in oxidation number.
redox reaction - a process in which there is no net movement of electrons from one reactant (reducing agent) to another (oxidizing agent).
reduction - the gain of electrons by a spesies,accompanied by a decrease in oxidation number.
redox reaction - a process in which there is no net movement of electrons from one reactant (reducing agent) to another (oxidizing agent).
WHAT IS ELECTROCHEMISTRY?
An electrochemical cell is a device capable of either deriving electrical energy from chemical reactions, or facilitating chemical reactions through the introduction of electrical energy. A common example of an electrochemical cell is a standard 1.5-volt "battery".
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