
Subatomic particle | Definition, Examples, & Classes | Britannica
Dec 12, 2025 · Subatomic particle, any of various self-contained units of matter or energy that are the fundamental constituents of all matter. They include electrons, protons, neutrons, quarks, …
Subatomic particle - Wikipedia
Subatomic particles are either "elementary", i.e. not made of multiple other particles, or "composite" and made of more than one elementary particle bound together.
Structure of the Atom: Understanding Subatomic Particles
The proton, the neutron, and the electron are the three so-called subatomic particles. The proton and neutron are each approximately 1000 times more massive than the electron.
Subatomic Particles You Should Know - ThoughtCo
May 5, 2025 · Learn about the 3 main types of subatomic particles and their properties, as well as other important subatomic particles in chemistry and physics.
What is an Atom? - International Atomic Energy Agency
Jan 5, 2026 · This subatomic particle (the hydrogen nucleus) was later renamed the proton. (Infographic: M. Magnaye) Rutherford’s discovery led to the development of the first particle …
2.3: Atoms and Subatomic Particles - Chemistry LibreTexts
Contrary to what Dalton and his contemporaries believed, atoms can, in fact, be broken apart into smaller units called subatomic particles. Ultimately, three main types of subatomic particles …
Subatomic Particles Explained: Definition, Examples, Practice
Subatomic particles, which are the building blocks of atoms, include protons, neutrons, and electrons. Each type of particle has a distinct charge and relative mass.
Subatomic Particles Definition - Intro to Chemistry Key Term
Subatomic particles are the fundamental constituents of matter and energy, and their interactions govern the behavior of all physical phenomena. The three main subatomic particles are …
Subatomic Particles - Science Notes and Projects
Jan 6, 2024 · Atoms consist of three subatomic particles: protons, neutrons, and electrons. Each atom has a nucleus that contains protons and neutrons and has a positive electrical charge.
Subatomic Particles: The Building Blocks Of Atoms
Jan 23, 2025 · Atoms, the fundamental building blocks of matter, are composed of three primary subatomic particles: protons, neutrons, and electrons. Protons and neutrons reside within the …