Elementary particle
Appearance
In the Standard Model of particle physics, matter is constituted by 12 particle types and their antiparticles. Matter particules are divided into two classes: quarks and leptons. All other particles, like protons or neutrons are made of quarks, hence the name fundamental particles.
In addition, gluons, photons, W and Z bosons, which are the force carrier particles for, respectively, the strong, electromagnetic and weak interactions, are also considered as fundamental particles.