Upload
others
View
2
Download
0
Embed Size (px)
Citation preview
Noooo, not another
Power Point…. by Sue Boudreau, March 9th,
2008
Boring
The mystery of electrochemistry… Electrochemistry studies chemical reactions which take place in a solution between two charged plates or ‘electrodes’.
Electrodes are usually a metal.
The solution has +ive and –ive ions in it from an ionic salt. The solution is called the ‘electrolyte’.
What if you put Electricity through a Solu:on?
-‐ive electrode
+ive electrode
Ions in solution
Electrolysis and Electropla:ng If you put a voltage across an electrolyte, you can separate the ions like this…
Electrolysis is when electricity breaks down a compound.
Electroplating is when metals ions coat a metal electrode.
Used for silver pla:ng and ___
If you make Electricity with Chemical Reac:ons… It’s called a ‘battery’! Here’s some you can make…
Zn Nail
Cu penny
How Real BaGeries work:
How would your life be different without this man?
Alessandro Volta, invented the electric battery in 1800
Where is Electrochemistry Important? Protective coating of objects with metals or metal oxides through
electro-‐deposition ex. Chrome plating.
Getting metals from ore, like aluminum and titanium.
Batteries use electochemical reactions to make electricity.
Photosynthesis is an electrochemical process.
So is respiration!
Nerve impulses are based on electric current generated by the movement of sodium and potassium ions into and out of cells
MAKE A SLIDE ILLUSTRATING and EXPLAINING ONE USE OF ELECTROCHEMISTRY.