2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib yam khoom uas muaj tib hom atom lossis ib hom molecule yog cov khoom ntshiab. Feem ntau ntawm cov teeb meem nyob ib puag ncig peb, txawm li cas los xij, muaj cov khoom sib xyaw ntawm cov khoom ntshiab. Huab cua, ntoo, pob zeb thiab av yog piv txwv ntawm cov khoom sib tov.
Qhov piv txwv ntawm cov teeb meem twg raug cais raws li kev sib xyaw?
Piv txwv li, dej kais dej yuav muaj me me ntawm cov tshuaj sodium chloride yaj thiab cov tshuaj uas muaj hlau, calcium, thiab ntau lwm yam tshuaj. Cov dej ntshiab huv yog cov khoom siv, tab sis seawater, vim nws muaj ions thiab complex molecules, yog sib tov.
Tus qauv twg yog qhov piv txwv ntawm kev sib xyaw?
Piv txwv ntawm cov khoom sib xyaw suav nrog ntshav, mis nyuj, ntsev thiab dej, xuab zeb thiab dej, thiab lwm yam. Cov khoom sib xyaw tuaj yeem ua homogeneous lossis heterogeneous raws li kev faib tawm ntawm lawv cov khoom siv. Yog hais tias muaj ib tug txawm faib ntawm constituent hais, qhov sib tov yog homogeneous. Piv txwv li, sib tov ntsev thiab dej.
Koj qhia li cas yog qhov piv txwv ntawm qhov teeb meem yog sib xyaw?
Yog tias cov khoom tuaj yeem muab cais ua nws cov ntsiab lus, nws yog qhov sib xyaw. Yog hais tias ib yam khoom tsis yog tshuaj dawb huv, nws yog ib qho sib xyaw heterogeneous lossis homogeneous sib xyaw. Yog hais tias nws muaj pes tsawg leeg tsis sib xws, nws yog homogeneous sib xyaw.
Dab tsi yog qhov sib xyaw?
Ib qho sib xyaw yog khoom siv ua los ntawm ob lossis ntau yam khoom sib txawv, uas yog sib xyawtab sis tsis ua ke chemical. Kev sib tov yog hais txog kev sib xyaw ntawm lub cev ntawm ob lossis ntau yam khoom uas khaws cia cov cim ntawm tus kheej.
Pom zoo:
Kev cob qhia puas kho qhov teeb meem ntawm kev sib raug zoo ntawm tus kheej?
Teeb meem nrog kev sib raug zoo ntawm tus kheej feem ntau tiv thaiv cov neeg ua haujlwm kev cob qhia los ntawm kev hloov tus cwj pwm. Txhawm rau txhim kho kev sib raug zoo ntawm tus kheej (kev nyab xeeb ntawm lub hlwb), koj yuav tsum muaj kev cob qhia rau cov neeg ua haujlwm tsom mus rau kev txhim kho kev sib raug zoo ntawm tus kheej.
Qhov teeb meem twg yog qhov ua rau muaj kev sib tsoo?
Muaj ntau qhov ua rau muaj kev sib tw, tsis muaj ib qho twg yuav tsum tshwm sim ntawm lub cev, noj qab haus huv network! Qhov feem ntau yuav ua rau yog kev sib tsoo ntau dhau, uas tuaj yeem cuam tshuam Ethernet thav duab, ua rau tsuas yog thawj ib nrab ntawm tus ncej pom ua ntej nws raug txiav tawm los ntawm kev sib tsoo.
Qhov txawv ntawm qhov teeb meem thiab teeb meem yog dab tsi?
Raws li adjective qhov txawv ntawm qhov teeb meem thiab teeb meem. yog tias teeb meem yog teeb meem; nyuaj los kov yeej lossis daws tau thaum muaj teeb meem tsis txaus ntseeg lossis tsis txaus siab. Puas teeb meem grammatically yog lawm?
Puas qhov sib txawv thiab qhov sib txawv ntawm tus qauv muaj cov chav nyob?
Variance yog qhov nruab nrab squared deviations los ntawm qhov txhais tau tias, thaum tus qauv sib txawv yog lub hauv paus square ntawm tus lej no. … qauv sib txawv yog qhia nyob rau hauv tib units raws li tus nqi qub (piv txwv li, feeb lossis meters).
Puas cov sib tov sib xyaw ua ke muaj cov khoom sib xws?
Ib homogeneous sib tov yog sib tov nyob rau hauv uas muaj pes tsawg leeg yog uniform thoob plaws qhov sib tov .. Qee cov ntaub ntawv hais ntxiv tias cov tshuaj lom neeg tsis tuaj yeem muab cais rau hauv nws cov ntsiab lus los ntawm kev sib cais ntawm lub cev, piv txwv li, tsis muaj kev cuam tshuam tshuaj lom neeg.
