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16 Cards in this Set
- Front
- Back
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Conductor |
Let's electrons flow easily |
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Electric Current |
The flow of electric charge. Electrons flowing through a wire or ions flowing through a solution both constitute electrical charge. Measured in units of amperes or A. 1 ampere is equal to 1 could be per second |
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Redox reaction |
A reaction that involves oxidation and reduction |
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Electrochemical cell |
A device where the generation of electricity through redox reactions occurs |
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Voltaic (galvanic cell) |
Electrochemical cell that produces electrical current from a spontaneous reaction |
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Electrolyte cell |
A second type of electrochemical cell consumes electrical current time to drive a nonspontaneous chemical reaction |
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Half cell |
One half of an electrochemical cell where either oxidation or reduction occurs |
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Electrodes |
A conductive surface through which electrons can enter or leave a half cell like a stipulated of zinc and a strip of platinum |
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Electromotive force (e m f) |
The force that results in the motion of electrons due to a difference in potential |
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Potential difference |
A measure of the difference in potential energy, usually in joules per unit of charge called the Coulomb. 1 Volt is equal to 1 joules per Coulomb |
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Cell potential or cell e-m-f (E cell) |
The potential difference between the cathode and the anode in an electrochemical cell |
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Standard cell potential or standard e-m-f (E°cell) |
The cell potential for a system in standard states (solute concentration of 1 mol/L and gaseous really tantalizing partial pressure of 1 atm/1bar) |
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Anode |
The electrode in an electrochemical cell where oxidation occurs and electrons flow away from the anode |
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Cathode |
The electrode in an electrochemical cell where reduction occurs and electrons flow toward the cathode |
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Salt bridge |
An inverted U-shaped tube containing a strong electrolyte like sodium nitrate that connects the two half cells allowing a flow of ions that neutralizes the charge buildup |
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What happens after the strong electrolyte in the salt bridge dissociate? |
Negative ions flow to neutralize the accumulation of positive charges at the anode and positive ions flow to neutralize the accumulation of negative charges at the cathode. |
