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- 1. Multiple Choice
Oxidation is the _________ of electrons.
loss
gain
sharing
transfer
- 2. Multiple Choice
Reduction is the ___________ of electrons.
loss
gain
sharing
transfer
- 3. Multiple ChoiceWhich of the following represents reduction?C → CON2 → NH3Zn → Zn2+H2 → H2O
- 4. Multiple Choice
In the reaction Zn + 2HCl --> ZnCl2 + H2
which element, if any, is oxidized?
Zinc
Hydrogen
Chlorine
None
- 5. Multiple ChoiceIn the reaction
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________ReducedSynthesizedOxidizedNone of the above - 6. Multiple ChoiceWhich statement is true:
Mg → Mg2+ + 2e–Mg gains 2 electronsMg2+ loses 2 electronsMg loses 1 electronMg loses 2 electrons - 7. Multiple ChoiceWhich of the following half reactions correctly represents a reduction half reaction?Fe →Fe2+ + 2e-Pb4+ + 2e- →Pb2+2O-2 →O2 + 4e-Fe + 3e- →Fe3+
- 8. Multiple ChoiceAnother name for a "oxidation-reduction" reaction ischemical reactionneutralization reactionredox reactionnuclear reaction
- 9. Multiple Choice
What is the oxidizing agent of this reaction?
3Mg + N2−−−−> Mg3N2
Mg
N2
Mg3N2
MgN
- 10. Multiple ChoiceWhat is the reducing agent of this reaction?
3Mg + N2−−−−> Mg3N2MgN2Mg3N2MgN - 11. Multiple ChoiceWhat is the reducing agent of this reaction?
2Al(s) + 6H+(aq) −−−> 2Al3+ (aq) + 3H2(g)H+Al3+AlH2 - 12. Multiple Choice
What is a battery?
A galvanic (voltaic) cell or series of cells that is usually constructed as a power source.
A series of cells or galvanic (voltaic) cell that receives power from a separate power source.
- 13. Multiple Choice
What is a fuel cell?
A voltaic cell with constant potential because reactants are constantly added.
A galvanic cell that fluctuates its potential.
A battery with constant potential because products are constantly added to the reaction in equilibrium.
- 14. Multiple Choice
Define corrosion.
Naturally occurring oxidation of metals.
Naturally occurring reduction of metals.
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