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Electrochemical cell
A device containing chemicals that react to produce electricity
Battery
Two or more electrochemical cells in a series
Constructing a simple cell
Join two different metals together, whilst both are in contact with an electrolyte
Factors which determine a cell's voltage
Type of electrode, concentration of electrolyte, Type of electrolyte
Electrode
a device for conducting electricity
Electrolyte
A substance containing free moving ions
Rechargeable cell
A cell in which the chemical reaction is reversed when a current is applied
Non-rechargeable cell
A cell in which the current stops as a reactant runs out
Reactivity and voltage
The larger the difference in electrode reactivity, the higher the voltage
Metal
An element that forms positive ions
Reactivity of a metal
the tendency of a metal to form positive ions
Positive terminal of a cell
Less reactive metal, accepts electrons
Negative terminal of a cell
More reactive metal, gives electrons