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WorksheetsRedox Reactions
Total questions: 15
Worksheet time: 12mins
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
Combustion and single-replacement reactions are __________ redox reactions.
always
never
sometimes
mostly
_____________ synthesis and decomposition reactions involve the transfer of electrons.
All
Most
No
Some
Defined as the loss of electrons.
oxidation
reduction
redox
OIL RIG
Defined as the gain of electrons.
oxidation
redox
reduction
LEO GER
Cl2 + 2e- --> 2Cl - is an example of:
a chemical reaction
redox
oxidation
reduction
These keep track of the movement of electrons.
(+) and (-) signs
oxidation numbers
coefficients
subscripts
An increase in oxidation number.
more acidic
reduction
less basic
oxidation
A decrease in oxidation number.
concentrated
reduction
oxidation
dilute
What is the oxidation number of C in SrCO3?
-4
+2
-6
+4
What is the oxidation number of Cr in Cr2O72- ?
+14
+6
-6
-14
Substance that oxidizes another substance by accepting its electrons.
reducing agent
oxidation number
combustion
oxidizing agent
Substance that reduces another substance by losing electrons.
reducing agent
half-reaction
electronegative atom
oxidizing agent
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
What is the reducing agent here: N2 + 3H2 --> 2NH3
N2
H2
NH3
2NH3
