Ukusabela heterogeneous - plain no elula!

Abafundi abaningi bakhononda ukuthi abaqondi chemistry futhi bakubheka omunye ezinzima kakhulu esikoleni. Ngokwesibonelo, omunye inkulumo ethi "ukuphendula heterogeneous" asikisela abafundi abaningi bethukile. Ngandlela-thile, zingabantu Akungabazeki kwesokudla. Yize-ke i-chemistry zingaba abangane. Uzungeze ezimpilweni zethu kuyo yonke indawo. iseluleko Iningi kuhle abafundi abazimisele ukwenza abangane nale isayensi nzima - uthisha ukuze afundise izinto onikwa laleso naleso sifundo. Ukuze silungiselele amakilasi hhayi lesi simiso: "Namuhla angimbuzanga - ke awukwazi ukufundisa!", Kodwa isimiso: "Ngifuna ukwazi nokuqonda konke, ngisho kanjalo zofunda angimbuzanga!". Kuphela ngale ndlela ibhizinisi-chemistry kuyoba ngawe nencwadi evuliwe. Futhi wenza kanjalo uyokuqonda futhi phawula kuyo yonke imikhakha yokuphila kwethu.

Kulesi sihloko sizogxila kuphela le nto chemical ngenxa yokuphatheka heterogeneous. Kanjani ukuqonda leli gama? Uma ukusabela izwi ucishe ecacile (it ibhekisela ekuhlobaneni izidakamizwa), lapha igama elithi "heterogeneous" - okwakudala izinkinga eziningi esikoleni. Lapha kumelwe sikhumbule ukuhunyushwa igama lesiGreki elithi "geteros" - zihlukene kangaka, ahlukahlukene.

ukuphendula heterogeneous: izibonelo nokuphila

ukusabela heterogeneous zenzeke phakathi ezahlukene ngokwemvelo, kodwa kunalokho isimo ngokomzimba we ketshezi. Omunye esikoleni samabanga aphansi umfundi ngamunye wazi ukuthi iyiphi into kungenzeka isimo wokuhlanganisa 3 (noma 3 izigaba) njengoba okuqinile, uketshezi noma isimo gaseous. Ngakho, lokho kubhekwa njengokuzijabulisa yokusabela heterogeneous uma izinto angene kuwo, akunjalo ezifundeni ezahlukene wokuhlanganisa, isibonelo:

• + Igesi ketshezi
• igesi + niqinile
• liquid + okuqinile.

Uma izinto okuyinto basabela nomunye kukhona esimweni esifanayo wokuhlanganisa, ukusabela zokuphumula ezinjalo zibizwa ngokuthi eyohlobo. Igama angahunyushwa nangokuthi kusukela ngesiGreki, "gomos" - okufanayo, efanayo.

ukusabela eyohlobo futhi heterogeneous ngokuvamile zenzeka ekuphileni kwethu. Ngokwesibonelo, cabanga, ukuphendula ukhuni amandla omlilo. Izinkuni - okungukuthi, futhi enkulu, ikhemikhali Lokudabuka organic - cellulose. Ngokungangabazeki, izinkuni - ikhemikhali isebujameni okuqinile. Bashisa ngenxa isenzo oxygen. Oxygen - yigesi. Ngenxa yalokho, amandla omlilo ukuphendula nezinkuni kwakhiwa amalahle, carbon dioxide futhi amanzi. Amandla omlilo izinkuni evuthayo utshwala - yokusabela heterogeneous. Izibonelo lungenzeka infinity.

1) yensimbi Rusting. Okokuqala, ukusabela zamakhemikhali, ngoba kwakheka umphumela ketshezi entsha yensimbi - nokugqwala yensimbi hydroxide (III). Okwesibili, kuyinqubo heterogeneous, kusukela yensimbi - kuyinto okuqinile kanye amanzi kanye nomoya-mpilo, kuza ngaphansi rusting ithonya - kuyinto liquid igesi ngokulandelana. Le nqubo singasetshenziswa eyabhalwa okulandelayo yokusabela ezothando :

Fe (tv.) + H2O (g.) + O2 (g) = Fe (OH) 3 (sol.)

2) eqeda of uviniga soda. omama abaningi basebenzisa le yokusabela chemical ukulungiswa inhlama aluhlaza. Uma lokhu kuthathwe soda NaHCO3 okuqinile in ifomu powder bese isixazululo 3% we acetic acid CH3COOH, Ngakho-ke, kubuye kube inqubo heterogeneous, kusukela izinto ababili abasizanayo ezifundeni ezahlukene wokuhlanganisa. Le nqubo ibizwa esachazwa kwesibalo:

NaHCO3 + CH3COOH = CH3COONa + H2O + CO2

Phawula ukuthi lapha imikhiqizo ukuphendula kukhona ezifundeni ezahlukene wokuhlanganisa - sodium acetate namanzi CH3COONa + H2O - kuyinto ketshezi kanye CO2 - kuyinto-carbon dioxide.

3) blackening izikhumbuzo zethusi noma silverware ngaphansi izimo kuma - futhi ukusabela heterogeneous.

Ngithemba ukuthi manje leli gama akakubangeli ukukubangela ezinye izinkinga. Futhi uma usanemibuzo, musa ubuvila ukuvula incwadi kwemithi ebangeni 8 bese uphinda ekwazisweni kwezabelo futhi. Akuzange kubuhlungu, kungcono lutho isaga Russian uthi: "Impinda - Practice kwenza ephelele"