( ( Quantum ( Mechanics ( and ( Atomic Orbitals ) ) ) ) ; )
(ROOT (NP (NP (NNP Quantum) (NNPS Mechanics) (CC and) (JJ Atomic) (NNP Orbitals)) (: ;)))
Quantum Mechanics and Atomic Orbitals;
(ROOT (S (NP (NP (DT The) (JJ specialized) (NN study)) (PP (IN of) (NP (NP (DT the) (NN motion)) (PP (IN of) (NP (NP (NNS objects)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADJP (JJ atomic/subatomic) (PP (IN in) (NP (NN size)))))))))))) (VP (VBZ is) (VP (VBN called) (NP (NN quantum) (NNS mechanics)))) (. .)))
The specialized study of the motion of objects that are atomic/subatomic in size is called quantum mechanics.