Chemistry Concepts and Applications

Section 1: The Nature of Oxidation-Reduction Reactions

Self Check Quizzes

1
In the oxidation of zinc by a molecule of oxygen, how many electrons are transferred to the oxygen atoms?

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A)1
B)2
C)3
D)4
2
The reducing agent is the material that __________.

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A)gains electrons
B)increases its atomic number
C)is oxidized
D)is reduced
3
A reaction in which __________ are lost and gained is an oxidation-reduction reaction.
A)electrons
B)hydrogen ions
C)neutrons
D)protons
4
When sodium reacts with sulfur to form sodium sulfide, each sulfur atom __________.
A)gains one electron
B)gains two electrons
C)loses one elecron
D)loses six electrons
5
Which element is oxidized in the reaction BaCl2(aq) + Na2SO4(aq) → 2NaCl(aq) + BaSO4(s)?
A)Ba
B)Cl
C)Na
D)none
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