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

Chemistry

Electrolysis of molten salts

Electrolysis: extracting aluminium

Electrolysis of aqueous solutions

Electrolysis: brine

Electrolysis: aqueous solutions practical

Electrolysis: purifying copper

Half equations: electrolysis

Electric cells and batteries

Fuel cells

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 liquid or aqueous salt solution that contains freely moving ions

when a substance has been broken down by electrolysis

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

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

a chemical equation used to show the electrons lost in oxidation or the electrons gained in reduction

a balanced equation showing all the ions involved in a reaction

the ions not involved in a chemical reaction

A device that contains a store of chemicals that react to produce a voltage across two electrical contacts.

This is a measure of the difference in energy between two parts of a circuit. It is measured in volts.

A liquid or aqueous salt solution that contains freely moving ions.

An electric cell, or several cells joined together in series, that can push current around a complete circuit to transfer energy to each component.

a device that produces a voltage when supplied with a fuel and oxygen

the network that connects all the power stations in the country to make sure that everywhere has access to electricity

a fuel that formed over millions of years from the dead remains of organisms

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Electrolysis

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