a quark is a fundamental constituent of matter. It is what makes up protons and neutrons and there is nothing smaller than them. They cannot DO anything alone, merely make up other things
Physicist Murray Gell-Mann coined the term "quark" for what was then referred to as a parton. The name is a literary reference to James Joyce's book Finnegans Wake: Three quarks for muster mark Quark...
If you meant to ask what is a quark, it's one of the basic elementary particles in what physicists refer to as the Standard Model. Electrons and neutrinos, as well as certain other related particles...
If a quark and anti-quark collide, they could scatter. But it is also possible (with increasing probability at lower energies) that they undergo what is called mutual annihilation. In mutual...
Quarks are building blocks for subatomic particles. They are considered to be fundamental particles, and are thus not made up of other particles. Quarks bind together with gluons to make composite...