C6 - Electrolysis Flashcards
What does “Molten” mean?
A melted solid e.g. a liquid
What does “Cation” mean?
A positive ion
What does a ‘Anion’ mean?
A negative ion
What does “Cathode” mean?
A negative electrode
What does an “Anode” mean?
A postive Electrode
What is an “Electrolyte”?
Molten or aqueous ionic compound liquids that are able to conduct electricity
What does the term “Electrolysis” mean?
Electrical decomposition of a substance
When an 1 is MELTED, the ions are 2 to move about within the liquid.
These liquids are able to conduct electricity and are called 3.
Passing an electric current through ELECTROLYTES causes the ions to move to the 4.
5 (positive ions) move to the 6 (negative electrode) and 7 (negative ions) move to the 8 (positive electrode).
lons are DISCHARGED at the electrodes producing elements.
This process is called 9 - the breaking down of a compound by electricity.
1 - IONIC COMPOUND
2 - FREE
3 - ELECTROLYTES
4 - ELECTRODES
5 - CATIONS
6 - CATHODE
7 - ANIONS
8 - ANODE
9 - ELECTROLYSIS
What are electrodes?
Solid conductors made of metal or carbon
What happens first during electrolysis?
An electric current is passed through an electrolyte so the ions move toward the electrodes where they react and the compound decomposes
What happens first during electrolysis?
An electric current is passed through an electrolyte so the ions move toward the electrodes where they react and the compound decomposes
What happens to the ions in electrolysis after the compound decomposes?
The positive ions move towards the cathode and gain electrons
The negative electrons move towards the anode to lose electrons
When the positive ions in electrolysis move towards the cathode and gain electrons, what we say they become?
Reduced
When the negative ions in electrolysis move towards the anode and lose electrons, what do we say they become?
Oxidised
What happens when +/- ions get to the electrode?
They become discharged (neutral ions)
