1: The oxidation number of an element indicates the number of electrons lost, gained, or shared as a result of chemical bonding.
True
False
Not enough information
2: The change in the oxidation state of a species lets you know if it has undergone _______ __ _______.
reduction or corrision.
oxidation or erosion
oxidation or reduction.
3: Reduction can be defined as "a _________ in oxidation number".
increase
decrease
stabilizes
4: Redox reactions often can be most easily balanced by first dividing them into ___________; that is, the oxidation reaction and the reduction reaction.
sections
half-reactions
relationships
5: Gold will most likely _______ corrosion.
encourage
resist
None of these
6: Ag+(aq) + e- ----> ______.
Ag2+(s)
Ag1-(aq)
Ag(s)
7: In question # 6 above, the silver ion is ______ ______ to gain electrons.
not likely
very likely
never able
8: An examlple of an industrial process employed to guard materials against oxidation is:
titration
Brine electrolysis
electroplating
9: The oxidation number of an atom in the elemental state is ____.
-1
zero
1
10: Oxidation refers to the gaining of _________.
electrons
neutrons
oxygen
11: Microscale Chemistry refers to ______ chemicals being used.
more toxic
larger amounts of
smaller amounts of
12: _______ is a negatively charged ion, especially one that migrates to the anode in electrolysis.
anion
frion
cation
13: Moles are the amount of a substance that contains as many atoms, molecules, ions, or other elementary units as the number of atoms in 0.012 kilograms of carbon 12.
True
False
Not enough information
14: _______ is another word for a positive ion.
anion
frion
cation
15: A galvanic cell that does not require a battery souce yet transfers electrons is most likely known as a(n)________ reaction.
half
spontaneous
acid, base
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