The vast majority of your body is actually empty space

Atoms & Ions | Protons, Neutrons, Electrons (2027/28 Exams) · 7:49 · Video: Cognito · Watch at the source

In short: This video breaks down the fundamental architecture of matter, from the subatomic particles that build every cell to the mechanics of how atoms gain an electric charge.

Atoms are composed of three primary subatomic particles: protons, neutrons, and electrons. While they differ significantly in relative mass and electrical charge, their arrangement is precise. Protons and neutrons cluster within a central nucleus, while electrons orbit in specific shells or energy levels.

One of the most striking features of atomic structure is its scale. Atoms are predominantly empty space; the nucleus is extremely small compared to the overall volume of the atom, which typically has a radius measured in nanometres. The video also explains how atoms maintain electrical neutrality and how they transform into ions by gaining or losing electrons.

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