( ( ( ( Electrolytes ( dissolve ( by dissociation ) ) ) -- ) ( ( that is ) ( , ( ( ( the molecules ) ( of ( the ( substance ( ( break down ) ( into ( charged particles ) ) ) ) ) ) ) ( called ions ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Electrolytes)) (VP (VB dissolve) (PP (IN by) (NP (NN dissociation))))) (: --) (S (ADVP (DT that) (VBZ is)) (, ,) (NP (NP (DT the) (NNS molecules)) (PP (IN of) (NP (DT the) (NN substance) (S (VP (VB break) (PRT (RP down)) (PP (IN into) (NP (JJ charged) (NNS particles)))))))) (VP (VBD called) (NP (NNS ions)))) (. .)))
Electrolytes dissolve by dissociation--that is, the molecules of the substance break down into charged particles called ions.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN electrolyte)) (VP (VBZ is) (NP (NP (DT a) (NN compound)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB form) (NP (NNS ions)) (SBAR (WHADVP (WRB when)) (S (NP (PRP it)) (VP (VBZ dissolves) (PP (IN in) (NP (NP (NN water)) (VP (VBN called))))))))))))) (. .)))