Kimia

Oxidation thiab Reduction Yog Dab Tsi? Kev Taw Qhia: Oxidation thiab reduction yog ob lub tswv yim tseem ceeb hauv chemistry uas ua lub luag haujlwm tseem ceeb hauv ntau yam txheej txheem tshuaj lom neeg thiab kev lag luam. Txawm hais tias feem ntau suav tias yog qhov nyuaj, kev nkag siab txog oxidation thiab reduction tuaj yeem muab cov kev nkag siab zoo rau ntau yam tshuaj lom neeg uas tshwm sim nyob ib puag ncig peb txhua hnub. Tsab xov xwm no… nyeem ntxiv

Cov Khoom Siv Lub Cev thiab Tshuaj Lom Zem ntawm Halogens: Kev Saib Xyuas Kom Zoo ntawm Cov Ntsiab Lus hauv Pawg 17 Halogens yog ib pawg ntawm cov ntsiab lus hauv Pawg 17 ntawm lub rooj teev sijhawm, uas muaj fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), thiab tsis ntev los no tenesine (Ts). Raws li cov ntsiab lus tsis yog hlau, halogens muaj cov khoom siv lub cev thiab tshuaj lom neeg tshwj xeeb uas ua rau lawv... nyeem ntxiv

Cov Txheej Txheem Ua Yas Los Ntawm Cov Organic Compounds: Yas yog ib qho ntawm cov khoom siv dav tshaj plaws hauv ntau yam lag luam thiab lub neej txhua hnub. Nws lub teeb yuag, yoog tau, tiv taus dej, thiab cov khoom siv tau ua rau nws yog qhov kev xaiv zoo tshaj plaws rau ntau daim ntawv thov, los ntawm kev ntim khoom noj mus rau cov khoom siv hnyav hauv kev lag luam. Hauv tsab xov xwm no, peb yuav tshawb nrhiav cov txheej txheem ua yas… nyeem ntxiv

Dab Tsi Yog Kev Tshwm Sim Tsis Rov Qab Los? Cov tshuaj lom neeg yog cov txheej txheem tseem ceeb hauv chemistry uas piav qhia txog cov tshuaj teb li cas los tsim cov khoom tshiab. Ntawm ntau hom tshuaj lom neeg, cov tshuaj tsis rov qab los yog qhov nthuav tshwj xeeb. Tsab xov xwm no yuav tham txog cov tshuaj tsis rov qab los tob tob, lawv cov txheej txheem, piv txwv, thiab lawv qhov tseem ceeb hauv ntau yam kev siv. Nkag Siab Txog Cov Tshuaj Tsis Rov Qab Los… nyeem ntxiv

Kev Sib Raug Zoo Ntawm Qhov Siab Thiab Qhov Ntim Roj Kev Taw Qhia Roj yog ib qho ntawm peb hom khoom uas peb feem ntau ntsib nyob ib puag ncig peb, nrog rau cov kua thiab cov khoom khov. Ob qho tib si muaj cov yam ntxwv thiab cov yam ntxwv sib txawv. Txhawm rau nkag siab txog tus cwj pwm ntawm cov roj, peb yuav tsum tshuaj xyuas qee qhov tseem ceeb ntawm physics thiab chemistry uas yog lub hauv paus ntawm lawv. Ib qho kev sib raug zoo tseem ceeb heev hauv… nyeem ntxiv

Cov Zoo thiab Qhov Tsis Zoo ntawm Rutherford Atomic Model Rutherford atomic model, uas Ernest Rutherford tau hais tawm xyoo 1911, yog ib qho tseem ceeb hauv kev txhim kho chemistry thiab physics. Cov qauv no tau tshwm sim los ntawm kev sim alpha particle scattering, uas tau sib tw nrog Thomson atomic model qub. Hauv tsab xov xwm no, peb yuav tshawb nrhiav cov zoo thiab qhov tsis zoo ntawm Rutherford atomic model… nyeem ntxiv

Txoj Kev Sib Cais Cov Khoom Sib Xyaws Chromatography Kev Taw Qhia Chromatography yog ib txoj hauv kev zoo tshaj plaws thiab siv tau ntau yam rau kev sib cais cov tshuaj sib xyaw, siv rau ntau qhov chaw ntawm kev tshawb fawb thiab kev lag luam. Lub npe "chromatography" los ntawm cov lus Greek "chroma," txhais tau tias xim, thiab "graphein," txhais tau tias sau. Txawm hais tias cov txheej txheem no tau siv thawj zaug los sib cais cov khoom sib xyaw xim, niaj hnub no chromatography tuaj yeem siv los sib cais... nyeem ntxiv

Cov Qauv thiab Kev Ua Haujlwm ntawm Protein Kev Taw Qhia Cov protein yog cov molecule loj, nyuaj uas ua lub luag haujlwm tseem ceeb hauv yuav luag txhua txoj kev ua haujlwm ntawm lub cev tib neeg thiab lwm yam tsiaj txhu. Lawv muaj cov saw ntev ntawm cov amino acids uas muab tais ua cov duab peb-seem tshwj xeeb, ua rau lawv ua ntau yam haujlwm. Hauv tsab xov xwm no, peb yuav tshawb nrhiav cov qauv… nyeem ntxiv

Nkag Siab Txog Cov Tshuaj Tiv Thaiv Exothermic thiab Endothermic Cov tshuaj tiv thaiv yog cov xwm txheej tseem ceeb uas peb feem ntau ntsib hauv lub neej txhua hnub. Cov tshuaj tiv thaiv tsis yog tsuas yog tshwm sim hauv chav kuaj xwb tab sis kuj tshwm sim hauv ntau yam txheej txheem uas tshwm sim nyob ib puag ncig peb, xws li ua noj, cua sov, roj hlawv, thiab txawm tias hauv peb lub cev. Cov tshuaj tiv thaiv tuaj yeem muab faib ua pawg raws li ntau yam ... nyeem ntxiv

Cov Hom Isomers hauv Chemistry Isomers yog cov tshuaj uas muaj cov mis molecular zoo ib yam tab sis txawv hauv cov qauv lossis atomic arrangement. Qhov xwm txheej no yog ib qho ntawm cov yam ntxwv zoo tshaj plaws ntawm cov organic thiab inorganic chemistry vim tias qhov kev hloov pauv ntawm cov qauv no tuaj yeem tsim cov tshuaj uas muaj cov khoom sib txawv ntawm lub cev thiab tshuaj. Muaj ntau hom isomers uas tuaj yeem faib ua pawg ... nyeem ntxiv