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Browse key terms and definitions across all GCSE subjects. Search by keyword or filter by subject and exam board.
23,110 key terms
Electronic communication
The transmission of information electronically, including through the internet and telecommunications networks.
Electronic configuration
The arrangement of electrons in the shells around an atom's nucleus.
Electronic configuration
The arrangement of an atom's electrons in its electron shells.
Electronic configuration
The arrangement of electrons in an atom's shells, for example 2,8 for neon.
Electronic structure
The arrangement of electrons in an atom's occupied energy levels or shells.
Electronic structure
The arrangement of electrons in an atom or ion, often written as the number in each shell, such as 2,8,1.
Electronic system
An arrangement of connected electronic components that receives inputs, processes signals and produces outputs to perform a function.
Electronic waste
Discarded electrical or electronic equipment, such as unwanted computers and smartphones.
Electron microscope
An instrument that uses a beam of electrons to form an image, providing much higher magnification and resolving power than a light microscope.
Electron microscope
A microscope that uses electrons to produce an image, with much higher magnification and resolving power than a light microscope.
Electron microscopy
A form of microscopy that uses a beam of electrons rather than visible light to produce highly resolved images.
Electron orbit
The path at a particular distance from the nucleus used to represent an electron's energy level in the atomic model.
Electron orbit
One of the allowed set distances from the nucleus at which an electron can exist in the GCSE atomic model.
Electron sharing
The use of pairs of electrons by more than one atom, producing or rearranging covalent bonds.
Electron shell
A region around the nucleus containing electrons with a particular range of energy; also called an energy level.
Electron shell
Another name for an energy level: a set distance from the nucleus at which electrons orbit.
Electron shell
An energy level outside an atom’s nucleus that contains electrons.
Electron shielding
The reduction in the attraction between the nucleus and an outer or incoming electron caused by electrons in inner shells.
Electron shielding
The reduction in attraction between the nucleus and an outer electron caused by electrons in inner shells.
Electron transfer
The movement of one or more electrons from one atom to another.
Electron transfer
The movement of electrons from one material to another.
Electron transfer
The movement of electrons from one object to another, changing the overall charge of each object.
Electroplating
Using electricity to deposit a thin coating of metal on an object.
Electroplating
A process that deposits a thin layer of one metal onto another using an electric current through an electrolyte.
Electrostatic attraction
A force of attraction between particles with opposite electric charges.
Electrostatic attraction
The attractive force between particles with opposite electrical charges.
Electrostatic force
The force of attraction between particles with opposite electric charges.
Electrostatic force
An attractive or repulsive force between electrically charged objects.
Electrostatic force
A force between electrically charged particles. Opposite charges attract; like charges repel.
Electrostatic force
A force of attraction or repulsion between electric charges.
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