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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
Etherification
C
Distillation
D
Accentricity
2) What charge do uncombined elements have?
A
42
B
2
C
-1
D
0
3) What happens to the oxidation number of the species that is oxidized?
A
It increases
B
It remains the same
C
Uh, I like tacos
D
It decreases
4) What happens to the oxidation number of the species that is reduced?
A
It is multiplied by two
B
It increases
C
It remains the same
D
It decreases
5) In a redox reaction, what term is used to describe the ions that do not change charge in the reaction?
A
Acids
B
Bases
C
Salts
D
Spectator ions
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 was a spectator ion
B
It lost 2 electrons
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 net charge
C
The spectator ions
D
The amount of water
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
Oxidized
B
Decomposed
C
Synthesized
D
Reduced
9) What direction do electrons flow in a voltaic cell?
A
Salt bridge to cathode
B
Load to anode
C
Anode to cathode
D
Cathode to anode
10) Where does oxidation occur in a voltaic cell?
A
Anode
B
Cathode
C
Salt bridge
D
Load
11) Where does reduction occur in a voltaic cell?
A
Anode
B
Salt bridge
C
Load
D
Cathode
12) What flows through the salt bridge in a voltaic cell?
A
Anodes
B
Ions
C
Cathodes
D
Ions
13) What increases in size while a voltaic cell is running?
A
Electrons
B
Ions
C
Anode
D
Cathode
14) What can a flow of electrons be used to power in a voltaic cell?
A
Load
B
Oxode
C
Cathode
D
Anode
15) What process can be used to separate highly reactive elements from their compounds?
A
Voltaic cell
B
Filtration
C
Ionization
D
Electrolysis
16) The existence of a power source indicates that what type of cell is being used?
A
Criminal
B
Electrolytic
C
Voltaic
D
Analytic
17) What process uses an electric current to plate the surface of a less active metal with a more active metal?
A
Fractional distillation
B
Evolution
C
Electroplating
D
Evaporation
*select an answer for all questions
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