Chemistry Oxidation Rules Question Preview (ID: 24104)
This Test Is Based On The Oxidation Rules.
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In all compound except when combined with F or in a peroxide O has an oxidation number of
a) +2
b) -2
c) -1
d) +1
A pure element (not in combination) will have an oxidation number of
a) 0
b) +1
c) -1
d) +2
The sum of the oxidation numbers of all atoms in a netrual compound is
a) +1
b) -1
c) 0
d) -2
If an atom gives up two electrons it becomes an ion with a charge of
a) -2
b) +2
c) -3
d) +1
When hydrogen combines with a metal, the oxidation number of hydrogen is
a) 0
b) +1
c) +2
d) -1
When an atom gains an electron what has taken place?
a) oxidation
b) reduction
c) ionization
d) neutralization
In the compound CaO if O has an oxidation number of -2 what is the oxidation number of Ca?
a) +2
b) 0
c) +1
d) -1
If H has an oxidation number of +1 and S has an oxidation number of-2 what will be the correct chemical formula for a compound containing only those two elements?
a) H2S2 (note the numbers should be subscripts)
b) HS2 (note the numbers should be subscripts)
c) H2S (note the numbers should be subscripts)
d) HS
All elements in Group 1 of the periodic table have an oxidation number of
a) -1
b) -2
c) +3
d) +1
In a compound where elements gain or loss electrons a ____________________ bond is formed.
a) covalent
b) ionic
c) hydrogen
d) metallic
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