quark

a quark is a fundemental constituant of matter Observed in 1968 through deep elastic scatter We found that protons aren't as simple as we thought We thought they were solid particles but they are not Protons in fact are made up of three separate pieces It just gets more confusing as our knowledge increases But that is what a quark is; It's a piece of a proton And they also make up other things including the neutron And with leptons and bosons, unless something's amiss, They make up everything that we can see and that we know exists Things made up of quarks including protons and neutrons Are composite particles that physicists call hadrons Many types of hadrons are theoretically described, But most exist for only very brief amounts of time Quarks have electric charge, color charge, mass and spin, And having color charge means they exist solely inside of Other kinds of particles and cannot exist alone Which is why quarks have never been studied on their own Quarks can join together in two different ways, Baryons and Mesons, but most instantly decay If a particle has three quarks, then it's a baryon, And if there's one quark and and anti-quark, then it is a meson