( ( ( gas ( A state ) ) ( of ( matter ( that possesses ) ) ) ) ( ( particles ( that ( that ( are ( free ( to ( move ( about ( with ( ( no forces ) ( ( holding them ) together ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NN gas) (DT A) (NN state)) (PP (IN of) (NP (NP (NN matter)) (SBAR (WHNP (WDT that)) (S (VP (VBZ possesses))))))) (VP (VBZ particles) (SBAR (IN that) (S (NP (DT that)) (VP (VBP are) (ADJP (JJ free) (S (VP (TO to) (VP (VB move) (PP (IN about) (IN with) (NP (NP (DT no) (NNS forces)) (VP (VBG holding) (NP (PRP them)) (ADVP (RB together))))))))))))) (. .)))
gas A state of matter that possesses particles that that are free to move about with no forces holding them together.
(ROOT (S (NP (NP (NNS Particles)) (PP (IN in) (NP (NP (DT the) (NN gas) (NN state)) (PP (IN of) (NP (NN matter)))))) (VP (VBP do) (RB not) (VP (VB experience) (NP (NP (DT any) (NN force)) (PP (IN of) (NP (JJ mutual) (NN attraction) (CC or) (NN repulsion)))))) (. .)))
Particles in the gas state of matter do not experience any force of mutual attraction or repulsion.