Video: Qhov yooj yim cubic chemistry yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
CHEMISTRY GLOSSARY
Yooj yim los yog primitive kub lattice (sc kub -P) muaj ib lub pas nrig ntawm txhua lub ces kaum ntawm chav tsev cell. Nws muaj chav cell vectors a = b = c thiab interaxial angels α = β = γ = 90 °. Cov qauv siv lead ua yooj yim tshaj plaws yog cov uas tsuas muaj ib qho atom ntawm txhua qhov taw tes lattice
Hais txog qhov no, cov khoom siv twg muaj cov qauv cubic yooj yim?
hlau Polonium
Tom qab ntawd, lo lus nug yog, pes tsawg atoms nyob rau hauv ib qho yooj yim cubic unit cell? Lub ntsej muag-centered cubic (fcc) muaj kev sib koom tes ntawm 12 thiab muaj 4 atom ua ib lub cell. Lub cev-centered cubic (bcc) muaj kev sib koom tes ntawm 8 thiab muaj 2 atom ua ib lub cell. Qhov yooj yim cubic muaj tus lej sib koom ua ke ntawm 6 thiab muaj 1 atom hauv ib chav cell.
Peb hom cubic unit cells yog dab tsi?
Muaj peb hom cubic unit cell uas yog (i) Yooj Yim kub (ii) Lub cev nyob nruab nrab kub (iii) Lub ntsej muag nyob nruab nrab kub . Cov no unit cell yog tsim los ntawm txawv tus naj npawb ntawm atoms lossis ions, uas yog raws li hauv qab no: (i) Yooj yim kub unit cell : Hauv qhov no, ib qho atom lossis ion nyob ntawm txhua lub ces kaum ntawm lub kub.
Lub cubic unit cell yog dab tsi?
Cov kub unit cell yog qhov tsawg tshaj plaws rov ua dua chav tsev thaum tag nrho cov ces kaum yog 90o thiab txhua qhov ntev yog sib npaug (daim duab 12.1. b) nrog txhua axis raug txhais los ntawm Cartesian coordinate (x, y, z). Txhua kub cell muaj 8 atoms nyob rau hauv txhua lub ces kaum ntawm lub voos xwmfab, thiab lub atom yog sib koom nrog 8 nyob sib ze hlwb.
Pom zoo:
Dab tsi yog qhov txawv ntawm osmosis diffusion thiab yooj yim diffusion?
Osmosis kuj tshwm sim thaum dej txav ntawm ib lub cell mus rau lwm qhov. Kev yooj yim diffusion ntawm qhov tod tes tshwm sim thaum qhov nruab nrab nyob ib puag ncig ntawm lub cell yog nyob rau hauv siab concentration ntawm ions los yog molecules tshaj qhov chaw nyob rau hauv lub cell. Cov molecules txav los ntawm ib puag ncig nruab nrab mus rau hauv lub cell vim diffusion gradient
Dab tsi yog qhov yooj yim ncaj saw alkane?
Alkanes. Ib qho alkane yog hydrocarbon nyob rau hauv uas tsuas muaj ib qho kev sib cog lus xwb. Qhov yooj yimstalkane yog methane, nrog cov mis molecular CH4. Cov pa roj carbonis lub hauv paus atom thiab ua rau plaub ib qho kev sib cog lus rau hydrogen atoms
Dab tsi yog qhov zoo ntawm fractional distillation tshaj qhov yooj yim distillation?
Fractional distillation yog qhov ua tau zoo dua hauv kev sib cais cov kev daws teeb meem zoo tshaj plaws rau hauv lawv cov khoom ntshiab dua li qhov yooj yim distillation. rau cov kev daws teeb meem uas sib txawv me ntsis ntawm Raoult txoj cai, txoj kev tseem tuaj yeem siv rau kev sib cais tag nrho
Dab tsi yog qhov yooj yim Mendelian zoo?
Mendelian cov yam ntxwv yog cov yam ntxwv uas tau dhau los ntawm qhov tseem ceeb thiab qhov tsis zoo ntawm ib lub noob. Alleles yog ntau hom noob, uas tsuas yog ib feem ntawm DNA uas nqa cov ntaub ntawv rau qee qhov zoo
Dab tsi yog qhov yooj yim units ntawm metric system?
Qhov yooj yim ntawm metric system stems los ntawm qhov tseeb tias tsuas muaj ib chav ntsuas (los yog lub hauv paus unit) rau txhua hom kev ntsuas (ntev, loj, thiab lwm yam). Peb lub hauv paus feem ntau nyob rau hauv metric system yog 'meter', gram, thiab liter