19 questions
The kind of chemistry that happens inside of a battery is called ___
quantum electrodynamics
thermodynamics
equilibrium chemistry
electrochemistry
Specifically, chemical reactions that involve the exchange of electrons are classified as ___
precipitation reactions
redox reactions
combustion reactions
electrolysis
A reaction's electrical potential, the strength of the push or pull on electrons, is commonly referred to as ___
current flow
voltage
resistance
impedance
When dealing with electrochemistry, the reaction process can be simplified by thinking in terms of ___
half reactions
quarter reactions
semi-exchanges
two-step reactions
The oxidation number of elemental zinc is ___
0
-2
+2
+4
In alkaline batteries, the water and hydroxide ions come from a basic solution of ___
potassium hydroxide
sulfuric acid
ammonia
baking soda
Excess electrons build up in the negative terminal of a battery, called the ___
anode
cathode
diode
capacitor
The positive terminal of a battery, which has a deficiency of electrons, is called the ___
anode
cathode
anion
cation
Electrons can cross from one half reaction to the other only when we connect the battery terminals with ___
a lightbulb
Hank's tongue
insulators
conductors
In the alkaline batteries, what keeps the zinc and the manganese oxide from mixing?
a salt bridge
a permeable membrane
a cellulose barrier
a metal conductor
An apparatus that generates electrical energy from a redox reaction is called ___
A Hofmann voltameter
a galvanic cell
a Faraday cage
a newton balance
In some galvanic cells the metal ions go from the anode to the cathode via ___
a salt bridge
a conducting wire
an acid overpass
an alkaline tunnel
In the copper-zinc galvanic cell, the half reactions show that the zinc is ___ and the copper is ___
reduced, oxidized
oxidized, reduced
precipitated, consumed
anodized, cathodized
As a general rule, when you convert a reduction half reaction to oxidation, the sign of the voltage is simply ___
omitted
reversed
made negative
made positive
In the galvanic cell, the electrical potential for the whole reaction, called the standard cell potential, is just ___
the sum of the standard potentials of both half reactions
the difference of the standard potentials of both half reactions
half of the product of the standard potentials
half of the sum of the standard potentials
The electrical potential of a redox reaction is related to its ___
evaporation rate
molar mass
equilibrium constant
relative permittivity
The non-spontaneous electrochemical reaction involving coating one metal on another is called ___
anodizing
electroplating
cathodizing
electron laminating
The technique that uses electricity to break apart molecules is called ___
electron reduction
hydrolysis
electrolysis
an N-type reaction
Electrolysis is used for lots of other things, like converting water into ___
hydronium ions
hydrogen gas and oxygen gas
hydroxide ions
hydrogen peroxide