a rod of metal or graphite through which an electric current flows in and out of an electrolyte

a liquid or solution that contains freely moving ions

a process that uses electricity to break down a compound

Principles of electrolysis

Combined science

Electrolysis of molten salts

Electrolysis: extracting aluminium

Electrolysis of aqueous solutions

Electrolysis: brine

Electrolysis: purifying copper

Electrolysis: aqueous solutions practical

In the Using Earth's Resources unit, pupils learned about the extraction, production and uses of hydrocarbons from crude oil, as well as metal extraction.

This unit focuses on electrolysis, electrode reactions, and predicting products, including competing reactions in solutions. It explains metal extraction through electrolysis and writing ionic equations. It also covers tests for gases like oxygen, hydrogen, carbon dioxide, and chlorine.

Electrolysis

the term used to describe a liquid substance formed by heating ionic compounds and metal ores.

A positively charged electrode, in an electrolysis cell, to which the anions are attracted.

A negatively charged electrode, in an electrolysis cell, to which the cations are attracted.

a compound consisting of two aluminum atoms and three oxygen atoms

a sedimentary rock with a high aluminium content

a compound used in the smelting of aluminium to lower the melting point

formed when a substance is dissolved in water

a negatively charged electrode, in an electrolysis cell, to which the anions are attracted

a positively charged electrode, in an electrolysis cell, to which the cations are attracted

A concentrated aqueous solution containing between 3.5% and 26% sodium chloride.

Reduction is a type of reaction in which a substance loses oxygen or gains electrons.

Oxidation is a type of reaction in which a substance gains oxygen or loses electrons.

a single element or compound that is not mixed with any other substance

a positively charged electrode, in an electrolysis cell, to which the anions are attracted

a negatively charged electrode, in an electrolysis cell, to which the cations are attracted

a liquid or an aqueous salt solution that contains freely moving ions

a process that uses electricity to deposit a thin layer of metal onto the surface of another conductive object

a liquid or aqueous salt solution that contains freely moving ions

when a substance has been broken down by electrolysis

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