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Electron - GCSE Physics Definition

Reviewed by: Philippa Platt

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An electron is a tiny particle that is part of an atom, which is the basic building block of all matter. Electrons have a negative electric charge and are found whizzing around the nucleus, which is the centre of the atom.

They are much smaller than the protons and neutrons that make up the nucleus. Electrons are important because they help form bonds between atoms to create all the different materials and substances we see around us.

They are also responsible for electricity, as the flow of electrons in a circuit is what powers our electrical devices.

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Philippa Platt

Reviewer: Philippa Platt

Expertise: Chemistry Content Creator

Philippa has worked as a GCSE and A level chemistry teacher and tutor for over thirteen years. She studied chemistry and sport science at Loughborough University graduating in 2007 having also completed her PGCE in science. Throughout her time as a teacher she was incharge of a boarding house for five years and coached many teams in a variety of sports. When not producing resources with the chemistry team, Philippa enjoys being active outside with her young family and is a very keen gardener

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