Video: Cov piv txwv ntawm kev hloov pauv yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov Hlau Hloov Pauv muaj, tshwj tsis yog Aluminium, Tin thiab Lead, tag nrho cov hlau uas tib neeg xav tias yog cov hlau ua haujlwm. Hlau , Tooj , Zinc, Titanium, Tungsten, tag nrho cov khoom muaj nqi hlau, thiab nyob rau hauv thiab nyob rau thiab nyob rau.
Ib yam li ntawd, koj txhais li cas los ntawm kev hloov pauv cov ntsiab lus?
Cov Hloov cov ntsiab lus yog cov cov ntsiab lus muaj ib feem puv d los yog f subshell nyob rau hauv tej yam oxidation xeev. Lub sij hawm " Hloov cov ntsiab lus " feem ntau yog hais txog qhov d - thaiv Hloov cov ntsiab lus.
Kuj Paub, cov hlau hloov pauv siv rau dab tsi? Kev hloov pauv hlau muaj ntau yam kev siv, nrog rau qee qhov tseem ceeb hauv qab no:
- Hlau feem ntau ua rau hlau, uas muaj zog dua thiab yooj yim dua li cov hlau ntawm nws tus kheej.
- Titanium feem ntau siv nyob rau hauv fighter aircrafts, dag hips thiab kav nyob rau hauv nuclear fais fab chaw nres tsheb.
Ib yam li ib tug yuav nug, uas yog cov hlau hloov pauv?
38 lub ntsiab lus hauv pawg 3 txog 12 ntawm lub sijhawm teem sijhawm hu ua " kev hloov hlau ". Raws li nrog tag nrho hlau , cov kev hloov pauv cov khoom yog ob qho tib si ductile thiab malleable, thiab ua hluav taws xob thiab cua sov. Cov ntsiab lus no yog hlau, cobalt, thiab npib tsib xee, thiab lawv tsuas yog cov khoom paub los tsim cov hlau nplaum.
Vim li cas cov kev hloov pauv hu ua qhov ntawd?
Cov kev hloov hlau tau muab rau lawv npe vim tias lawv muaj qhov chaw nruab nrab ntawm Pawg 2A (tam sim no Pawg 2) thiab Pawg 3A (tam sim no Pawg 13) hauv pawg loj cov ntsiab lus . Yog li ntawd, thiaj li yuav tau txais los ntawm calcium mus rau gallium nyob rau hauv Lub Sijhawm Table, koj yuav tsum tau kev hloov pauv koj txoj kev los ntawm thawj kab ntawm d thaiv (Sc → Zn).
Pom zoo:
Dab tsi yog qhov kev hloov pauv hloov pauv?
Kev hloov pauv, hauv molecular biology, yog hais txog kev hloov pauv hauv deoxyribonucleic acid (DNA), qhov twg ib qho (ob lub nplhaib) purine hloov pauv rau (ib lub nplhaib) pyrimidine, los yog vice versa
Dab tsi yog qhov txawv ntawm ib puag ncig kev hloov pauv thiab kev hloov pauv qub txeeg qub teg?
Qhov sib txawv ntawm cov yam ntxwv ntawm cov tib neeg ntawm tib hom yog hu ua variation. Qhov no yog inherited variation. Qee qhov kev hloov pauv yog qhov tshwm sim ntawm qhov sib txawv ntawm ib puag ncig, lossis ib tus neeg ua dab tsi. Qhov no yog hu ua environmental variation
Dab tsi tsim cov roj siab thiab nws hloov pauv li cas nrog kev hloov pauv hauv kinetic zog?
Gas siab yog tshwm sim los ntawm kev sib tsoo ntawm cov khoom siv roj nrog rau sab hauv ntawm lub thawv thaum lawv sib tsoo nrog thiab tawm dag zog rau ntawm phab ntsa ntim. Tom qab ntawd cov roj yog cua sov. Raws li qhov kub ntawm cov roj nce, cov khoom tau nce lub zog kinetic thiab lawv cov nrawm nrawm
Cov kev hloov ntawm lub cev txawv ntawm cov tshuaj hloov pauv li cas muab ib qho piv txwv ntawm txhua tus?
Kev hloov tshuaj lom neeg tshwm sim los ntawm cov tshuaj tiv thaiv tshuaj, thaum lub cev hloov pauv yog thaum cov teeb meem hloov pauv tab sis tsis yog tshuaj lom neeg. Piv txwv ntawm kev hloov tshuaj lom neeg yog hlawv, ua noj, xeb, thiab rotting. Piv txwv ntawm kev hloov lub cev yog boiling, melting, khov, thiab shredding
Peb qhov laj thawj tseem ceeb ntawm kev hloov pauv hloov pauv yog dab tsi?
Allele frequencies nyob rau hauv ib tug pej xeem yuav hloov vim plaub lub hauv paus zog ntawm evolution: Natural Selection, Genetic Drift, Mutations thiab Gene Flow. Kev hloov pauv yog qhov kawg ntawm cov alleles tshiab hauv cov noob caj noob ces. Ob ntawm cov txheej txheem tseem ceeb tshaj plaws ntawm kev hloov pauv hloov pauv yog: Natural Selection thiab Genetic Drift