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Electrochemical cells
Spontaneous redox reactions that generate electricity
Chemical energy is being converted to electrical energy
Also called Galvanic or Voltaic cells
Ex: car and phone batteries
Electrolytic cells
non-spontaneous reactions that use up electricity
Need an external power source
Ex: charging a battery
Electrode
A conductor to make contact with a non-metallic part of a circuit, in an electrochemical cell it is referred to as a cathode or anode
Anode
an electrode that goes through oxidation (loses electrons)
Cathode
An electrode that goes through reduction (gains electrons)
What does the voltage depend on?
Material/metal type of electrodes
Types and concentrations of the solutions
the temperature of the solution (measure of kinetic energy of particles)
Voltage
The force/pressure that makes electrons flow through a circuit
