( ( ( 1 Ions ) ( are ( ( ( atoms or ) molecules ) ( that ( have ( ( gained or ) lost ) ) ) ) ) ) ( ( ( ( electrons and ) thus ) ( have ( ( ( a negative ) or ) ( a ( positive charge ) ) ) ) ) . ) )
(ROOT (S (NP (NP (CD 1) (NNS Ions)) (SBAR (S (VP (VBP are) (NP (NP (NNS atoms) (CC or) (NNS molecules)) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (VP (VBN gained) (CC or) (VBN lost)))))))))) (VP (VP (VBZ electrons)) (CC and) (ADVP (RB thus)) (VP (VBP have) (NP (NP (DT a) (JJ negative)) (CC or) (NP (DT a) (JJ positive) (NN charge))))) (. .)))
1 Ions are atoms or molecules that have gained or lost electrons and thus have a negative or a positive charge.
(ROOT (S (NP (NP (NNS Atoms)) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (VP (VP (VBN gained) (NP (NNS electrons))) (CC and) (VP (VBN become) (S (VP (ADVP (RB negatively)) (VBN charged))))))))) (VP (VBP are) (VP (VBN called) (NP (JJ negative) (NNS ions)))) (. .)))