Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
Fundamental particles are the building blocks of matter that cannot be broken down into smaller particles. They are the smallest known entities in the universe.
Related terms
Protons: Positively charged subatomic particles found in the nucleus of an atom.