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8) Oxidation- Reduction

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by

Haifa Rahman

on 8 September 2013

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Transcript of 8) Oxidation- Reduction

AP CHEMISTRY
Oxidation- Reduction
by Haifa Rahman
10th grade
VIII.1 An oxidation- reduction (redox) reaction involves the transfer of electrons (e-)
GER- Gaining Electrons, Reduction (reducing positivity of charge)
VI.3 A half reaction can be written to represent reduction
WATCH THE PREVIOUS VIDEOS ON OXIDATION AND REDUCTION (in this same prezi) TO UNDERSTAND THIS BULLET!
VIII.8 3.2j An electrochemical cell can be either voltaic or electrolytic. In an electrochemical cell, oxidation occurs at the anode and reduction at the cathode.
http://chemwiki.ucdavis.edu/@api/deki/files/2261/=reducingoxidizingdiagram.png
LEO- Losing Electrons, Oxidation (elements gaining more electrons-negativity)
VI.5 A half reaction can be written to represent reduction
Learn how to write half reactions
Let's watch another one :)
also..check out mark rosengarten's videos on youtube on oxidation/reduction.
VIII.6 In a redox reaction the number of electrons lost is equal to the number of electrons gained 3.2h
http://year9reaction.files.wordpress.com/2008/08/burning-magnesium-reaction.png
example of a redox reaction
anode(-)
cathode (+)
source: http://0.tqn.com/d/chemistry/1/0/c/5/battery.gif, http://answers.yahoo.com/question/index?qid=20080512183412AAhJJeW, http://prezi.com/drncxv1mhmux/unit-11-reduction-oxidation-redox/, textbook
electrochemical cell- requires an electric current to force a nonspontaneous chemical reaction to occur.
The flow of electrons is from positive(cathode) to negative(anode).
voltaic cell- (spontaneous) flow of electrons (example: a battery.)
The flow of electrons is from negative(anode) to positive(cathode).
source:
this was a powerpoint ready made slideshow
as we said, in redox reactions, an exchange of electrons between particles being oxidized or reduced. One of the particular uses are these:
RED CAT- REDuction occurs at CAThode
AN OX- ANode is the site of OXidation
Full transcript