Amasu E-Gas Chromatography Ekuhlaziyweni Kwamakhemikhali I-gas chromatography (GC) iyindlela ebalulekile yokuhlukanisa nokuhlaziya kukhemistri yokuhlaziya yesimanje. Le ndlela isetshenziselwa ukuhlukanisa, ukuhlonza, kanye nokulinganisa izingxenye zengxube, ikakhulukazi ama-compounds aguquguqukayo azinzile emazingeni okushisa athile okushisa. Ngenxa yokunemba kwayo okuphezulu, isikhathi sokuhlaziya esisheshayo, kanye... Funda kabanzi
Ukusetshenziswa Kwamakhemikhali E-Phenol Njenge-Antiseptics Ama-Phenol compounds ayiqembu lamakhemikhali e-organic aziwa isikhathi eside ngomsebenzi wawo wokulwa namagciwane. Ekunakekelweni kwezempilo, i-phenol kanye nemikhiqizo yayo kwakuyizinsika ezibalulekile ekulawuleni ukutheleleka, ikakhulukazi ezinsukwini zokuqala zemikhuba yanamuhla yokubulala amagciwane. Nakuba ukusetshenziswa kwawo manje sekuthathelwe indawo kakhulu yi-antiseptics ephephile nesebenza kahle,... Funda kabanzi
Ayini Ama-Hydrocarbon Compounds? Ama-Hydrocarbon compounds angenye yamaqembu abaluleke kakhulu amakhemikhali empilweni yanamuhla. Sisebenzisana nemikhiqizo etholakala kuma-hydrocarbon cishe nsuku zonke, kusukela kuphethiloli wezimoto kanye negesi yokupheka kuya kumafutha enjini ngisho nezinto zokusetshenziswa zepulasitiki. Ngenxa yendima yawo ebalulekile, ukuqonda ukuthi ayini ama-hydrocarbon, isakhiwo sawo, kanye nezinhlobo zawo kubalulekile. … Funda kabanzi
Izinzuzo Zokusabela Kwe-Maillard Ebuciko Bokupheka Ezweni lokupheka, izinqubo eziningi zamakhemikhali zenzeka lapho ukudla kushiswa. Ezinye zalezi zinqubo ziholela ekushintsheni kokuthungwa, iphunga, kanye nokunambitheka okuthuthukisa ukunambitheka kokudla. Enye yezindlela ezibaluleke kakhulu zokusabela, okuvame ukuxoxwa ngazo ngabapheki nochwepheshe bokudla, yi-Maillard Reaction. Lokhu kusabela "kuyimfihlo" ngemuva... Funda kabanzi
Ukuqonda Ukusabela Kokwenziwa Nokubola Ekhemistri, ukusabela kuwushintsho oluhilela ukuqala kwezinto (ama-reactant) akha izinto ezintsha (imikhiqizo). Lezi zinguquko zingenzeka ngokwemvelo noma ngezinqubo eziklanywe elabhorethri noma embonini. Phakathi kwezinhlobo eziningi zokusabela kwamakhemikhali, ukusabela kokwenziwa kanye nokubola kuphakathi kwezinto eziyisisekelo kakhulu futhi ezixoxwa ngazo njalo. Kokubili… Funda kabanzi
Izinqubo Zoku-Oxidation Nokunciphisa ku-Electrochemistry I-Electrochemistry iyigatsha le-chemistry elifunda ubudlelwano phakathi kokusabela kwamakhemikhali nogesi. Ku-electrochemistry, umqondo oyisisekelo kakhulu ovela njalo ukusabela kwe-oxidation nokunciphisa (redox). Ngokusebenzisa ukusabela kwe-redox, ama-electron angahamba esuka kwesinye isici aye kwesinye. Lokhu kudluliswa kwama-electron kusebenza "njengebhuloho" phakathi kwezinguquko... Funda kabanzi
Ukusetshenziswa Kwamakhemikhali E-Ether Njenge-Anesthetics Amakhemikhali e-Ether ayisigaba samakhemikhali e-organic anesakhiwo esiyingqayizivele esakhiwe yi-athomu ye-oxygen exhumanisa amaqembu amabili e-alkyl noma e-aryl, evame ukubhalwa ngokuthi i-R–O–R'. Emlandweni wesayensi yezokwelapha, i-ether idlale indima ebalulekile ngoba yake yaba yi-anesthetic ethandwa kakhulu futhi eguquguqukayo. Nakuba ukusetshenziswa kwayo manje sekusabalele kakhulu … Funda kabanzi
Izinzuzo Nezingozi Zezinhlanganisela Ze-Chlorine I-Chlorine iyisakhi samakhemikhali esijwayeleke kakhulu empilweni yansuku zonke, ikakhulukazi ngenxa yokusetshenziswa kwayo njengesibulala-magciwane kanye ne-bleach. Etafuleni le-periodic, i-chlorine inophawu lwe-Cl futhi iyilungu leqembu le-halogen. Emazingeni okushisa egumbi, i-chlorine emsulwa iyigesi eluhlaza okwesibhakabhaka ephuzi enephunga elimnandi. Nakuba ivame ukubhekwa njenge-"chemical eyingozi," empeleni... Funda kabanzi
Ukusetshenziswa Kwamakhemikhali E-Polymer Ekuphileni Ama-polymer angenye yamaqembu amakhemikhali ahlotshaniswa kakhulu nokuphila kwabantu banamuhla. Cishe konke esikuthintayo—kusukela ezitsheni zokuphuza nezingubo kuya kumadivayisi ezokwelapha ngisho nezingxenye zezimoto—kuhlobene nama-polymer. Kalula nje, ama-polymer angachazwa njengama-molecule amakhulu (ama-macromolecule) akhiwe ngamayunithi amancane, aphindaphindayo abizwa ngokuthi ama-monomers. Uma… Funda kabanzi
Umsebenzi Nokusetshenziswa Kwema-Microscope E-Electron Ama-Microscope ayithuluzi elibalulekile ekuthuthukisweni kwesayensi, okwenza abantu bakwazi ukubona izinto ezincane kakhulu ukuthi zingabonwa ngeso lenyama. Nakuba ama-microscope akhanyayo (abonakalayo) esesetshenziswa kabanzi ezikoleni nasema-laboratory, ama-microscope e-electron anikeza ubuchwepheshe obuyinkimbinkimbi kakhulu bokwembula isakhiwo esinemininingwane sezinto... Funda kabanzi