Question

what is the smallest part of any matter (except atom)?

Answer 1

Quarks represent the smallest known subatomic particles. These building blocks of matter are considered the new elementary particles, replacing protons, neutrons and electrons as the fundamental particles of the universe. There are six types, called flavors of quarks: up, down, charm, strange, top and bottom. Furthermore, quarks come in three colors, representing their force: red, blue and green. Up and down quarks are the most common and least massive. Protons are comprised of one down and two up quarks, while neutrons are comprised of one down and two up quarks.