to an extent. quantum mechanics is a physical theory which extends and corrects newtonian mechanics, which are the three laws set out by newton. this is mostly important at the atomic and subatomic level. it is the underlying framework of many fields of physics and chemistry, including condensed matter physics, quantum chemistry, and particle physics. quantum mechanics were famously described by bohr and einstien who put forward theroys which helped to create the atomic bomb.
In particle physics, quarks are subatomic particles thought to be elemental and indivisible. objects made up of quarks are known as hadrons, well known examples are protons and neutrons. they are considered (by most) to be the smallest particles in existance(along with leptons).