Oxidation Numbers
The oxidation number of a free element is ___.
What is zero?
The part of the redox reaction in which the atoms or ions of an element lose electrons.
What is oxidation?
Oxidized or reduced:
Mg in
F2 0 + Mg0 --> 2F– + Mg2+
What is oxidized?
A common name for a Voltaic Cell used in everyday life?
What is a battery?
Negative subatomic particles are called ______
What are electrons?
______________ is the addition of electrons to a substance involved in a redox reaction.
What is reduction?
"GER" in the phrase
LEO the lion says GER
Stands for ...
Gaining electrons reduction
The ____________ is the positive electrode in a voltaic cell.
What is the CATHODE?
Type of reaction in which electrons are transferred.
What is REDOX or oxidation reduction reactions?
Hydrogen has an oxidation number of +1, except when...
What is combined with a metal?
(METAL HYDRIDES)
Connects the two containers of a voltaic cell, and provides a path for a flow of ions. (Often made of NaCl)
What is a salt bridge?
Reducing agent in
H2+Cl2 → 2HCl
What is H?
Finish the lyric:
We start at the _____________ , electrons are ____________ there.
What is the anode, lost?
What group are the noble gases?
What is group 18?
The oxidation number of Pt in K2PtF6.
What is +4?
During redox reactions, oxidizing agents undergo this change. (Increase or decrease in oxidation number)
What is decrease their oxidation number?
The direction electrons flow in a voltaic cell with a Copper strip as the Cathode and a Tin strip Anode.
What is the electrons would flow from tin to copper?
What reference table has polyatomic ions.
What is Table E?
The oxidation number of phosphorus in Ca3(PO4)4
What is +5?
A substance that has the potential to cause another substance to be reduced?
What is Reducing Agent?
How does the number of electrons lost in an oxidation compare with the number gained in the simultaneous reduction?
What is
the two numbers are always equal?
These ions DO NOT have a change in oxidation numbers during redox reactions.
What are spectator ions?