( ( in solids ) ( ( the atoms ) ( ( ( ( ( ( are ( closely ( locked ( in position ) ) ) ) and ) ( ( can only ) vibrate ) ) , ) ( in ( ( liquids ( ( the ( ( atoms and ) molecules ) ) ( ( ( are ( ( more loosely ) connected ) ) and ) ( can ( ( ( ( ( collide with ) and ) ( move ( past one ) ) ) another ) ( , ( ( while ( ( in gases ) ( ( the ( ( atoms or ) molecules ) ) ( are ( free ( to ( move independently ) ) ) ) ) ) ) , ) ) ) ) ) ) ) ( colliding frequently ) ) ) ) . ) ) )
(ROOT (S (PP (IN in) (NP (NNS solids))) (NP (DT the) (NNS atoms)) (VP (VP (VBP are) (ADJP (RB closely) (VBN locked) (PP (IN in) (NP (NN position))))) (CC and) (VP (MD can) (ADVP (RB only)) (VP (VB vibrate))) (, ,) (PP (IN in) (NP (NP (NNS liquids)) (SBAR (S (NP (DT the) (NNS atoms) (CC and) (NNS molecules)) (VP (VP (VBP are) (ADJP (ADVP (RBR more) (RB loosely)) (VBN connected))) (CC and) (VP (MD can) (VP (VP (VB collide) (PP (IN with))) (CC and) (VP (VB move) (NP (JJ past) (NN one))) (NP (DT another)) (PRN (, ,) (SBAR (IN while) (S (PP (IN in) (NP (NNS gases))) (NP (DT the) (NNS atoms) (CC or) (NNS molecules)) (VP (VBP are) (ADJP (JJ free) (S (VP (TO to) (VP (VB move) (ADVP (RB independently))))))))) (, ,))))))) (VP (VBG colliding) (ADVP (RB frequently)))))) (. .)))
in solids the atoms are closely locked in position and can only vibrate, in liquids the atoms and molecules are more loosely connected and can collide with and move past one another, while in gases the atoms or molecules are free to move independently, colliding frequently.
(ROOT (S (PP (IN Within) (NP (DT a) (NN substance))) (, ,) (NP (NP (NNS atoms)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBP collide) (ADVP (RB frequently))) (CC and) (VP (VBP move) (ADVP (RB independently)) (PP (IN of) (NP (CD one) (DT another)))))))) (VP (VBP are) (ADJP (ADJP (RBS most) (JJ likely)) (PP (IN in) (NP (DT a) (NN gas)))))))