( Ions ( ( ( may also ) ( be ( formed ( when ( ( an ( ( atom or ) molecule ) ) ( ( loses ( ( ( one or ) more ) electrons ) ) ( as ( ( ( a result ) ( of energy ) ) ( ( gained ( in ( a collision ) ) ) ( ( ( with ( another particle ) ) or ) ( with ( a photon ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Ions)) (VP (MD may) (ADVP (RB also)) (VP (VB be) (VP (VBN formed) (SBAR (WHADVP (WRB when)) (S (NP (DT an) (NN atom) (CC or) (NN molecule)) (VP (VBZ loses) (NP (QP (CD one) (CC or) (JJR more)) (NNS electrons)) (SBAR (IN as) (S (NP (NP (DT a) (NN result)) (PP (IN of) (NP (NN energy)))) (VP (VBD gained) (PP (IN in) (NP (DT a) (NN collision))) (PP (PP (IN with) (NP (DT another) (NN particle))) (CC or) (PP (IN with) (NP (DT a) (NN photon))))))))))))) (. .)))
Ions may also be formed when an atom or molecule loses one or more electrons as a result of energy gained in a collision with another particle or with a photon.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (DT an) (NN atom)) (VP (VBZ gains) (CC or) (VBZ loses) (NP (DT an) (NN electron))))) (NP (PRP it)) (VP (VBZ becames) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN ion))) (. .)))