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Regents Chemistry Unit 12
Test Description: Electrochemistry Fun!
Instructions: Answer all questions to get your test result.
1) What type of reaction involves the transfer of electrons?
A
Reduction-Oxidation (redox)
B
Distillation
C
Accentricity
D
Etherification
2) What charge do uncombined elements have?
A
-1
B
42
C
0
D
2
3) What happens to the oxidation number of the species that is oxidized?
A
It decreases
B
It remains the same
C
It increases
D
Uh, I like tacos
4) What happens to the oxidation number of the species that is reduced?
A
It decreases
B
It increases
C
It is multiplied by two
D
It remains the same
5) In a redox reaction, what term is used to describe the ions that do not change charge in the reaction?
A
Spectator ions
B
Salts
C
Bases
D
Acids
6) If the oxidation state of a species changes from 0 before a redox reaction to 2 after the reaction, what happened to it?
A
It lost 2 electrons
B
It was a spectator ion
C
It was decomposed
D
It gained 2 electrons
7) To balance a net ionic reaction, what must be the same on both sides?
A
The number of acids
B
The spectator ions
C
The amount of water
D
The net charge
8) Table J is the Activity Series that show the activity of metals and nonmetals. For metals, being active means that they are more likely to be
A
Decomposed
B
Oxidized
C
Reduced
D
Synthesized
9) What direction do electrons flow in a voltaic cell?
A
Cathode to anode
B
Anode to cathode
C
Salt bridge to cathode
D
Load to anode
10) Where does oxidation occur in a voltaic cell?
A
Salt bridge
B
Anode
C
Load
D
Cathode
11) Where does reduction occur in a voltaic cell?
A
Anode
B
Salt bridge
C
Cathode
D
Load
12) What flows through the salt bridge in a voltaic cell?
A
Ions
B
Cathodes
C
Ions
D
Anodes
13) What increases in size while a voltaic cell is running?
A
Anode
B
Ions
C
Cathode
D
Electrons
14) What can a flow of electrons be used to power in a voltaic cell?
A
Load
B
Cathode
C
Anode
D
Oxode
15) What process can be used to separate highly reactive elements from their compounds?
A
Filtration
B
Electrolysis
C
Ionization
D
Voltaic cell
16) The existence of a power source indicates that what type of cell is being used?
A
Analytic
B
Electrolytic
C
Voltaic
D
Criminal
17) What process uses an electric current to plate the surface of a less active metal with a more active metal?
A
Electroplating
B
Evaporation
C
Evolution
D
Fractional distillation
*select an answer for all questions
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