( ( A ( chemical property ) ) ( ( is ( ( ( a ( predictable tendency ) ) ( of ( ( a substance ) ( -LRB- ( ( ( ( pure element ) or ) compound ) -RRB- ) ) ) ) ) ( to ( ( react ( with ( a ( ( completely different ) substance ) ) ) ) ( to ( produce ( a ( new substance ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN chemical) (NN property)) (VP (VBZ is) (NP (NP (DT a) (JJ predictable) (NN tendency)) (PP (IN of) (NP (NP (DT a) (NN substance)) (PRN (-LRB- -LRB-) (NP (NP (JJ pure) (NN element)) (CC or) (NP (NN compound))) (-RRB- -RRB-)))) (S (VP (TO to) (VP (VB react) (PP (IN with) (NP (DT a) (ADJP (RB completely) (JJ different)) (NN substance))) (S (VP (TO to) (VP (VB produce) (NP (DT a) (JJ new) (NN substance)))))))))) (. .)))
A chemical property is a predictable tendency of a substance (pure element or compound) to react with a completely different substance to produce a new substance.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT a) (JJ pure) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (RB not) (VP (VB be) (VP (VBN broken) (ADVP (RB down) (PP (IN into) (NP (NP (JJ different) (NNS types)) (PP (IN of) (NP (NNS substances)))))) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN element))))))))) (. .)))