Ngokusekelwe esigabeni esilandelayo esiphathelene namanzi, yini eyenza amanzi abambane.
Context:Ukuphila kwavela olwandle lokuqala eMhlabeni, olwaba khona eminyakeni engaba yizigidi eziyizinkulungwane ezingu-3,8 edlule. Kusukela ngaleso sikhathi, amanzi ayaqhubeka eyi-molecule eningi kunazo zonke izinto eziphilayo. Amanzi abalulekile ekuphileni ngoba ayi-solvent esebenzayo, ekwazi ukuncibilikisa izinto ezinjenge-sodium ne-chloride ion noma amanye ama-molecule amancane ukuze kwakheke isixazululo samanzi. Lapho sezincibilike emanzini, lezi zinto ezincishisiwe cishe ziyothintana futhi ngenxa yalokho zibambe iqhaza ekuphenduleni kwamakhemikhali okusekela ukuphila. Ngokuqondene nesakhiwo sayo samangqamuzana, amanzi i-molecule encane ene-polar enesimo esigobile esakhiwe yizibopho ze-polar covalent zama-athomu amabili e-hydrogen (H) kuya kwe-athomu elilodwa le-oxygen (O) (H2O). Ngenxa yokuthi izibopho ze-O<unk>H ziyi-polar, i-athomu le-oxygen linecala elincane elibi kanti ama-athomu amabili e-hydrogen anecala elincane elihle. Le mpahla ye-polar yamanzi iyenza ikwazi ukuheha amanye ama-molecule amanzi ngezibopho ze-hydrogen, okwenza amanzi ahlangane. Ukungezwani kobuso kubangelwa amandla okuhlangana ngenxa yokuheha phakathi kwamangqamuzana asemhlabathini wamanzi. Amanzi nawo anamathela njengoba ekwazi ukunamathela ebusweni bawo wonke ama-molecule angawamanzi ane-polar noma ane-charged. Amanzi anobuningi obukhulu uma ewuketshezi kunangesikhathi ewuketshezi oluqinile (noma iqhwa). Lesi sici esiyingqayizivele samanzi sivumela iqhwa ukuba linyuke phezu kwamanzi anjengamachibi, amachibi, nezilwandle, ngaleyo ndlela likhiphe uketshezi olungaphansi emoyeni obandayo ongaphezulu. Amanzi anekhono lokumunca amandla, okwenza abe namandla okushisa aphakeme kunamanye ama-solvent afana ne-ethanol. Ngakho, kudingeka amandla amaningi ukuze kuphulwe izibopho ze-hydrogen phakathi kwamangqamuzana amanzi ukuze amanzi abe umusi wamanzi. Njenge-molecule, amanzi awazinzile ngokuphelele njengoba i-molecule ngayinye yamanzi ihlukana ngokuqhubekayo ibe yi-hydrogen ne-hydroxyl ion ngaphambi kokuba ivuselelwe ibe i-molecule yamanzi futhi. Emanzini amsulwa, inani lama - hydrogen ions liyalinganisa (noma lilingana) nenani lama - hydroxyl ions, okuphumela ekubeni ne - pH engathathi hlangothi.
Amanzi ahlangana ngenxa yezakhiwo zawo ezisezindaweni ezibandayo eziwavumela ukuba adonse amanye ama-molecule amanzi ngokusebenzisa izibopho ze-hydrogen.