Chemistry: Matter and Change

Section 1: Oxidation and Reduction

Self Check Quizzes

1
When is the oxidation number of oxygen not -2?
A)in oxyacids
B)in peroxide
C)in sulfuric acid
D)c. in peroxide
2
Select the compound in which chlorine has the highest possible oxidation number.
A)HCl
B)HClO
C)HClO3
D)HClO4
3
The most electronegative atom in a compound has a charge that is __________.
A)positive
B)negative
C)neutral
D)zero
4
What is the oxidation number of magnesium after it is burned?

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A)0
B)1
C)2
D)3
5
What are the oxidation numbers of K and Cl after the reaction?

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A)K = -1, Cl = 1
B)K = 0, Cl = 0
C)K = 1, Cl = -1
D)K = -1, Cl = -1
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