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- 1. Multiple Choice
A redox reaction is NOT:
all reactions
a combustion reaction
a reduction-oxidation reaction
a reaction in which electrons are transferred from one atom to another
- 2. Multiple Choice
Combustion and single-replacement reactions are __________ redox reactions.
always
never
sometimes
mostly
- 3. Multiple Choice
_____________ synthesis and decomposition reactions involve the transfer of electrons.
All
Most
No
Some
- 4. Multiple Choice
Defined as the loss of electrons.
oxidation
reduction
redox
OIL RIG
- 5. Multiple Choice
Defined as the gain of electrons.
oxidation
redox
reduction
LEO GER
- 6. Multiple Choice
Cl2 + 2e- --> 2Cl - is an example of:
a chemical reaction
redox
oxidation
reduction
- 7. Multiple Choice
These keep track of the movement of electrons.
(+) and (-) signs
oxidation numbers
coefficients
subscripts
- 8. Multiple Choice
An increase in oxidation number.
more acidic
reduction
less basic
oxidation
- 9. Multiple Choice
A decrease in oxidation number.
concentrated
reduction
oxidation
dilute
- 10. Multiple Choice
What is the oxidation number of C in SrCO3?
-4
+2
-6
+4
- 11. Multiple Choice
What is the oxidation number of Cr in Cr2O72- ?
+14
+6
-6
-14
- 12. Multiple Choice
Substance that oxidizes another substance by accepting its electrons.
reducing agent
oxidation number
combustion
oxidizing agent
- 13. Multiple Choice
Substance that reduces another substance by losing electrons.
reducing agent
half-reaction
electronegative atom
oxidizing agent
- 14. Multiple Choice
What is a half-reaction of this equation, Na + Cl --> NaCl ?
Cl + e- --> Cl-
Cl - e- --> Cl-
Na --> Na + e-
Na° + Cl°--> Na+1Cl-1
- 15. Multiple Choice
What is the reducing agent here: N2 + 3H2 --> 2NH3
N2
H2
NH3
2NH3
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