* Protons and Neutrons: These are found in the nucleus at the center of the atom. The nucleus is incredibly dense and contains almost all of the atom's mass.
* Electrons: These are found orbiting the nucleus in regions called electron shells or energy levels. They constantly move and are much smaller and lighter than protons and neutrons.
Think of it like a tiny solar system:
* The sun (nucleus) is at the center, holding the planets (electrons) in orbit around it.
