Regents Chemistry Unit 12: Question Preview (ID: 19542)


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What type of reaction involves the transfer of electrons?
a) Distillation
b) Etherification
c) Accentricity
d) Reduction-Oxidation (redox)

What charge do uncombined elements have?
a) -1
b) 0
c) 2
d) 42

What happens to the oxidation number of the species that is oxidized?
a) It increases
b) It decreases
c) It remains the same
d) Uh, I like tacos

What happens to the oxidation number of the species that is reduced?
a) It increases
b) It remains the same
c) It is multiplied by two
d) It decreases

In a redox reaction, what term is used to describe the ions that do not change charge in the reaction?
a) Acids
b) Spectator ions
c) Bases
d) Salts

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 decomposed
b) It was a spectator ion
c) It gained 2 electrons
d) It lost 2 electrons

To balance a net ionic reaction, what must be the same on both sides?
a) The spectator ions
b) The amount of water
c) The net charge
d) The number of acids

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) Reduced
b) Decomposed
c) Oxidized
d) Synthesized

What direction do electrons flow in a voltaic cell?
a) Cathode to anode
b) Anode to cathode
c) Load to anode
d) Salt bridge to cathode

Where does oxidation occur in a voltaic cell?
a) Cathode
b) Anode
c) Salt bridge
d) Load

Where does reduction occur in a voltaic cell?
a) Cathode
b) Anode
c) Salt bridge
d) Load

What flows through the salt bridge in a voltaic cell?
a) Anodes
b) Cathodes
c) Ions
d) Ions

What increases in size while a voltaic cell is running?
a) Anode
b) Ions
c) Cathode
d) Electrons

What can a flow of electrons be used to power in a voltaic cell?
a) Cathode
b) Anode
c) Oxode
d) Load

What process can be used to separate highly reactive elements from their compounds?
a) Ionization
b) Electrolysis
c) Voltaic cell
d) Filtration

The existence of a power source indicates that what type of cell is being used?
a) Electrolytic
b) Voltaic
c) Analytic
d) Criminal

What process uses an electric current to plate the surface of a less active metal with a more active metal?
a) Fractional distillation
b) Evaporation
c) Evolution
d) Electroplating

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