C6 Flashcards
Electrolysis
The process of breaking down an ionic substance by passing an electric current through it
Extraction (of metals)
The process of obtaining a metal from an ore, usually by reduction or electrolysis
Discharge
The process of ions losing or gaining electrons to become atoms or molecules
Electrolyte
A liquid or solution that can conduct electricity
Electrode
An electrical conductor that is used to make contact with a non-metallic part
of a circuit, e.g. an electrolyte
Anode electrode
A positive electrode. Negatively charged ions (anions) move towards this
electrode
Anion
A negatively charged ion, formed when one or more electrons are gained. This ion is attracted to the anode in electrolysis
Cathode electrode
A negative electrode. Positively charged ions (cations) move towards this electrode
Cation
A positively charged ion, formed when one or more electrons are lost. This ion is attracted to the cathode in electrolysis
Inert
A substance that does not take part in chemical reactions
Brine
Concentrated sodium chloride
Electrolysis of brine
Produces three useful products
Chlorine gas, Hydrogen gas and sodium hydroxide
