Basics
What type of energy is converted into electrical energy in an electrochemical cell?
Chemical energy
Is a galvanic cell spontaneous or non-spontaneous?
Spontaneous
Does an electrolytic cell require external power?
yes
Name one everyday device that uses electrochemical cells
Battery / phone / laptop
What does oxidation mean?
Loss of electrons
In which direction do electrons flow in a galvanic cell?
From anode to cathode
Are electrolytic reactions spontaneous?
no
What common process is caused by electrochemical reactions in metals?
Corrosion / rusting
What does the rule OIL RIG stand for?
Oxidation Is Loss, Reduction Is Gain
What is the function of a salt bridge?
It allows ion flow and keeps electrical neutrality
Give one example of an electrolytic process
Electrolysis of water / electroplating
How does salt affect corrosion?
It speeds it up
Why are redox reactions necessary in electrochemical cells?
They allow electrons to move and generate electric current
At which electrode does oxidation occur?
Anode
What is the main difference between galvanic and electrolytic cells?
Galvanic produces electricity, electrolytic consumes electricity
Why are electrochemical cells important in industry?
Energy storage, metal plating, chemical production
In a redox reaction, which process produces electrons and which consumes them?
Oxidation produces electrons, reduction consumes them
In a Zn–Cu cell, which metal is oxidized?
Zinc
In an electrolytic cell, where does oxidation occur?
At the anode (same rule still applies)
Why are batteries essential in modern technology?
They store and supply portable electrical energy