The Process of Electrolysis (Edexcel GCSE Chemistry Combined Science): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
Electrolysis definition
Electrolysis definition
Process using electric current to separate ionic compound into its elements
Meaning of 'electrolysis'
Meaning of 'electrolysis'
Splitting using electricity
State needed for electrolysis
State needed for electrolysis
Molten or dissolved in solution
Why solids can't undergo electrolysis
Why solids can't undergo electrolysis
Ions fixed in crystal lattice, cannot move freely
Electrolyte definition
Electrolyte definition
Ionic compound in molten/solution form with free-moving ions
Anode charge
Anode charge
Positive electrode
Cathode charge
Cathode charge
Negative electrode
Inert electrodes meaning
Inert electrodes meaning
Don't react with electrolyte
Ions attracted to cathode
Ions attracted to cathode
Positive ions
Process at cathode
Process at cathode
Reduction - ions gain electrons
Ions attracted to anode
Ions attracted to anode
Negative ions
Process at anode
Process at anode
Oxidation - ions lose electrons
Electron flow in external circuit
Electron flow in external circuit
From anode to cathode
Forms of electrolysis products
Forms of electrolysis products
Solid sediments or gases
What drives ion movement
What drives ion movement
Potential difference between electrodes