( ( ( electrons and ) positively ) ( ( charged ions ) . ) )
(ROOT (S (NP (NNS electrons) (CC and) (NNS positively)) (VP (VBD charged) (NP (NNS ions))) (. .)))
electrons and positively charged ions.
(ROOT (S (S (NP (JJ Remember) (NNS electrons)) (VP (VBP are) (ADVP (RB negatively)) (VP (VBN charged)))) (, ,) (IN so) (S (NP (NP (NNS ions)) (PP (IN with) (NP (DT a) (JJ positive) (NN charge)))) (VP (VBP have) (VP (VBN lost) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN electron))))) (. .)))