( ( Background material ) ( ( includes ( ( ( ( atoms and ) molecules ) , ) ( ( ( ( ( ( ( ( ( chemical bonding ) , ) ( chemical compounds ) ) , ) ( basic reactions ) ) , ) ( states ( of ( ( ( matter , ) solutions ) , ) ) ) ) and ) energy ) ) ) . ) )
(ROOT (SINV (ADJP (JJ Background) (NN material)) (VP (VBZ includes)) (NP (NP (NNS atoms) (CC and) (NNS molecules)) (, ,) (NP (NP (NN chemical) (NN bonding)) (, ,) (NP (NN chemical) (NNS compounds)) (, ,) (NP (JJ basic) (NNS reactions)) (, ,) (NP (NP (NNS states)) (PP (IN of) (NP (NP (NN matter)) (, ,) (NP (NNS solutions)) (, ,)))) (CC and) (NP (NN energy)))) (. .)))
Background material includes atoms and molecules, chemical bonding, chemical compounds, basic reactions, states of matter, solutions, and energy.
(ROOT (S (NP (NP (DT The) (NNS atoms)) (PP (IN of) (NP (DT a) (NN compound)))) (VP (VBP are) (VP (VBN held) (ADVP (RB together)) (PP (IN by) (NP (NN chemical) (NNS bonds))))) (. .)))