Key terms & definitions

The force of attraction between particles with opposite electric charges.

The rearrangement of electrons within an object caused by the electric field of a nearby charged object, without the objects needing to touch.

An attractive or repulsive interaction involving electric charges.

A device that uses electrostatic attraction to remove smoke and other particles from a gas.

The force that pushes like electric charges apart; it acts between positively charged nuclei.

A device that gives fine liquid droplets the same electric charge so that electrostatic forces control their movement.

An alloy of gold and silver, used for the only death mask discovered in Grave Circle B at Mycenae.

Expressing mourning or sorrow for something lost; an elegiac tone need not occur in a formally structured elegy.

A poem that mourns or reflects on someone who has died.

Ancient poetry composed in elegiac couplets, each pairing a hexameter line with a pentameter line. Its subjects can include warfare and political advice as well as grief.

A pure substance made from atoms that all have the same number of protons.

A substance containing only one type of atom.

An individual number or algebraic expression in a matrix, identified by its row and column.

An individual item stored in an array.

The bread and wine used in Holy Communion.

A two-dimensional view of a three-dimensional object seen directly from the front or side.

A two-dimensional view of a three-dimensional object seen directly from one side, such as the front or right.

Raising and supporting an injured area, ideally at or above heart level, to help reduce swelling.

The examination taken at about age eleven to select pupils for different types of secondary school.

An examination taken around age 11 to select pupils for different secondary schools, historically under the tripartite system and still used for grammar-school entry in some areas.

Another form of the name Elijah: an Old Testament prophet whose return was expected before the coming of the Messiah.

Meeting the legal conditions needed to stand for an election.

For parliamentary candidacy, a Commonwealth citizen who does not need permission to enter or remain in the UK, or who has indefinite leave to remain.

An algebraic method in which equations are added or subtracted so that one variable disappears.

A test that uses antibodies linked to an enzyme to detect a particular antigen, often through a colour change.

The wealthy or powerful members of a society, such as landowners and former tribal ruling families.

The most powerful or privileged group in a society, often possessing exceptional wealth and authority.

A small, privileged group with a disproportionate share of power or resources.

Sport performed at the highest competitive levels, such as international or top-level professional competition.

A supposedly magical liquid intended to prolong life indefinitely.