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WorksheetsRedox Reaction
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Oxidation is the _________ of electrons.
a)
loss
b)
gain
c)
sharing
d)
transfer
2.
What type of reaction is this: SF4 becomes SF6
a)
Hydrogenation
b)
Reduction
c)
Oxidation
d)
None of the above
3.
What is the IUPAC name and oxidation number of copper element in the compound Cu2O?
a)
Copper(I) oxide; +1
b)
Copper(I) oxide; +2
c)
Copper(II) oxide; +1
d)
Copper(II) oxide; +2
4.
As an element is oxidized, its oxidation number...
a)
increases as electrons are gained
b)
decreases as electrons are gained
c)
decreases as electrons are lost
d)
increases as electrons are lost
5.
A decrease in oxidation number.
a)
redox
b)
reduction
c)
oxidation
d)
dilute
6.
What substance is oxidized in the following reaction?
4Fe + 3O2 --> 2Fe2O3
4Fe + 3O2 --> 2Fe2O3
a)
Iron
b)
Fluorine
c)
Oxygen
7.
What is oxidation number of O in O2 ?
a)
0
b)
-2
c)
+1
d)
+2
8.
What is oxidation number of Cr in Cr2O72-?
a)
-2
b)
+2
c)
+6
d)
+12
9.
If an atom loses electrons during a chemical reaction, the atom was:
a)
Oxidized
b)
Reduced
c)
Neutralized
d)
Precipitated
10.
Another name for a "oxidation-reduction" reaction is
a)
chemical reaction
b)
neutralization reaction
c)
redox reaction
d)
nuclear reaction
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