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  1. 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, muons, …

  2. 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.

  3. Subatomic Particles - Science Notes and Projects

    Jan 6, 2024 · Subatomic particles are the building blocks of atoms, the smallest units of matter that cannot be divided by any chemical means. But, they also exist separate from atoms.

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  4. Subatomic Particles You Should Know - ThoughtCo

    May 5, 2025 · The atom is the smallest particle of matter than cannot be divided using a chemical means, but atoms consist of smaller pieces, called subatomic particles. Breaking it down even …

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  5. 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 protons, neutrons, …

  6. SUBATOMIC PARTICLE Definition & Meaning | Dictionary.com

    SUBATOMIC PARTICLE definition: Any of various particles of matter that are smaller than a hydrogen atom. Protons, neutrons, and electrons are subatomic particles, as are all hadrons and leptons. See …

  7. SUBATOMIC PARTICLE definition | Cambridge English Dictionary

    Electrons, protons and neutrons, for instance, are the subatomic particles that make up an atom.

  8. Subatomic particle | Research Starters | EBSCO Research

    Subatomic particles are incredibly small entities that exist within atoms, the fundamental building blocks of matter. These particles include protons, neutrons, and electrons, each serving essential roles in …

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  9. 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.

  10. Subatomic Particles (Simplified) Explained: Definition ...

    The atom is fundamentally composed of a nucleus and three key subatomic particles: protons, neutrons, and electrons. Each of these particles has distinct characteristics, particularly in terms of mass and …