KumiswaIsayensi

Izakhiwo yamanzi

Amanzi ingenye izinto main ukuqinisekisa ukuthi ukuba khona kule planethi futhi esintwini. Lena isici esiyingqayizivele ngokuphelele, ngaphandle okuyinto ke alikwazi ukuphila yanoma isiphi isidalwa esiphilayo. Ezinye zamakhemikhali Izakhiwo zanoma amanzi ahlukile.

Ukubaluleka kule ndaba ayikwazi overestimated. Amanzi ihlanganisa ingxenye enkulu yeminyaka iplanethi, ukwakha olwandle, nasemachibini, emifuleni kanye neminye imigwamanda amanzi. It is abahileleke ngokuqondile kumiswa kwesimo sezulu nezenzakalo, ngaleyo ndlela linikeze izimo ezithile khona kule noma ukuthi ikhona iplanethi.

Ukuze eminingi engokwemvelo, siwulimi ndawo. Ngaphezu kwalokho, cishe yonke into ephilayo e ngandlela-thile ke iphelelwe amanzi. Ngokwesibonelo, okuqukethwe kuyo enkulu yomzimba womuntu yakhiwa 70 kuya kwangu-90.

Izakhiwo amanzi: incazelo emfushane

I-molecule yamanzi uhlukile. Ifomula ngokuqinisekile bonke waziwa: H2O. Kodwa nakhu ezinye izindawo ngokomzimba yamanzi encike ngqo kwi isakhiwo zishintshe zayo.

Emvelweni, amanzi likhona ezintathu zithi wokuhlanganisa. Ngaphansi kwezimo ezivamile, lokhu izidakamizwa liquid ngaphandle umbala, iphunga ne ukunambitheka. Lapho izinga lokushisa uwela namanzi crystallizes aba yiqhwa. Njengoba kwanda lokushisa, uketshezi ludlulele ngaphakathi isimo gaseous - umusi.

Amanzi libhekene high density, okuyinto mayelana 1 igremu ngayinye isentimitha cubic. Amanzi abilayo kwenzeka uma izinga lokushisa kuvuselwa eziyikhulu degrees Celsius. Kodwa lapho izinga lokushisa lehla kuya 0 degrees ketshezi uguqulwe ice.

Ngokuthakazelisayo, nokuncipha umfutho womoya kubangela ukushintshashintsha lezi nemingcele - amanzi amathumba ezingeni lokushisa aphansi.

I conductivity ezishisayo amanzi cishe 0.58 W / (m * K). Esinye isici esibalulekile - kuphezulu yayo ebusweni kwadambisa isimo esasishubile, okuyinto cishe ilingane sibalo okuhambisanayo mercury.

I izakhiwo esiyingqayizivele ngokomzimba yamanzi

Njengoba sekushiwo, kuba namanzi okuqinisekisa khona evamile le planethi, ezithinta isimo sezulu kanye msebenzi obalulekile eziphilayo. Kodwa lesi sifundo uhlukile ngempela. Kuyinto lezi izakhiwo ezimangalisayo yamanzi unikeze ukuphila.

Ngokwesibonelo, cabangela izinkondlo, kwabantu ice namanzi. Ezimweni eziningi, amangqamuzana okokuqandisa impahla ahlelwe eduze komunye nomunye, isakhiwo yabo iba luthe ukuqina, kanti emfishane. Kodwa ngamanzi, leli qhinga akusebenzi. Ngokokuqala ngqá leli impahla emangalisayo ziye zachaza uGalileo.

Uma kancane ukwehlisa izinga lokushisa bese ukuqapha okokuqandisa yamanzi, isikimu sokuqala ngempela ejwayelekile - ketshezi iyoba luthe ukuqina, kanti emfishane. Izinguquko zenzeka emva lokushisa ifinyelela 4 ° C. Lapho la manzi inkomba ngokuzumayo kuba lula. Yingakho ice zintanta kwamanzi, kodwa akazange ukucwila. By the way, lesi sici kuqinisekisa sokusinda flora zasemanzini nezilwane - amanzi akuvamile zilimaze ngokuphelele, ekusindiseni izimpilo zezakhamuzi zakhona.

Phela, ngesikhathi okokuqandisa ketshezi yandisa ngo-9%. Lesi sici amanzi kubangela ukugqwala yamadwala zemvelo. Ngakolunye uhlangothi, okuwukuphela kwepayipi lamanzi yalokho aphule phezu Ukupholisa okungazelelwe.

Kodwa lokhu akulona zonke izakhiwo ezithakazelisayo yamanzi. Esinye isici esiyingqayizivele of it - kuyinto anomalously okusezingeni eliphezulu ukushisa umthamo. Ngokwesibonelo, inani ukushisa adingekayo amalahle eyodwa igremu ngokuligeza ngamanzi degree elilodwa, ngokwanele ukufudumeza mayelana 10 g ethusi noma yensimbi 9 g.

Zonke izilwandle zomhlaba - thermostat global, okuyinto smoothes ekushintshashintsheni lokushisa, kokubili diurnal futhi yonyaka. Phela, ezifanayo kodwa ngesikhathi esifanayo kanye benawo umhwamuko eziqukethwe emkhathini. Akuyona imfihlo ukuthi ehlane libhekene okungazelelwe lokushisa izinguquko - usuku kushisa kakhulu futhi buyabanda ebusuku. It ihlobene isikhathi emoyeni elomile kanye nokuntuleka lemali edingekile of umhwamuko.

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