Video: Dab tsi yog qhov hloov pauv hlau ntawm lub rooj zaum?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov 38 cov ntsiab lus hauv pawg 3 txog 12 ntawm cov daim ntawv qhia hnub hu ua " kev hloov hlau ". Raws li nrog tag nrho hlau , cov Hloov cov ntsiab lus yog ob qho tib si ductile thiab malleable, thiab ua hluav taws xob thiab cua sov.
Tsuas yog li ntawd, dab tsi yog qhov hloov pauv hlau hauv chemistry?
Hauv chemistry , lub sij hawm kev hloov hlau (los yog kev hloov pauv ) muaj peb lub ntsiab lus: IUPAC txhais tau tias a kev hloov hlau as "ib keeb nws lub atom muaj ib feem puv d sub-plhaub, los yog uas yuav ua rau kom cations nrog ib tug tsis tiav d sub-plhaub".
Qhov thib ob, vim li cas nws thiaj hu ua kev hloov pauv hlau? Cov kev hloov hlau tau muab lawv lub 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).
Ib yam li ntawd, tib neeg nug, qhov twg ntawm cov ntsiab lus hauv qab no yog cov hlau hloov pauv?
Hauv thawj kab ntawm kev hloov pauv hlau, kaum lub ntsiab lus uas tuaj yeem pom yog: Scandium (Sc), Titanium (Ti), Vanadium (V), Chromium (Cr), Manganese (Mn), Hlau ( Fe ), Cobalt ( Co ), Nickel ( Ni ), tooj liab (Cu), thiab zinc (Zn). Hauv qab no yog ib lub rooj ntawm oxidation hais tias cov hlau hloov pauv tuaj yeem ua tsis tau.
Puas yog magnesium hloov pauv hlau?
Lub npe kev hloov hlau hais txog txoj hauj lwm nyob rau hauv lub sij hawm lub rooj ntawm cov ntsiab lus . Cov Hloov cov ntsiab lus sawv cev rau qhov txuas ntxiv ntawm electrons mus rau d atomic orbitals ntawm cov atoms.
Hloov cov hlau . Sab hauv Hloov cov hlau.
| Pab pawg *** Lub Sijhawm | 3 |
|---|---|
| 11 Nws 22.99 | |
| 12 Mg 24.31 Nws | |
| 13 Ib., 26.98 | |
| 14 Peb 28.09 |
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 yog qhov kev hloov pauv ntawm cov khoom uas txav ntawm qhov chaw mus rau qhov chaw ntawm - 12 m?
Kev piav qhia: Qhov kev txav ntawm ib qho khoom txav ntawm qhov chaw mus rau qhov chaw ntawm − 12 m yog 12 meters. Qhov kev ncua deb ntawm lub hauv paus chiv keeb mus rau qhov siab tshaj plaws txoj hauj lwm yog hu ua displacement ntawm ib yam khoom. Qhov siab tshaj plaws kev hloov pauv ntawm cov khoom nyob rau hauv ib nthwv dej yog hu ua crest thiab qhov tsawg kawg nkaus hloov pauv yog hu ua trough
Dab tsi yog hlau ntawm lub rooj zaum?
Metallic cim yog lub npe muab rau cov txheej txheem tshuaj lom neeg nrog cov ntsiab lus uas yog hlau. Cov khoom siv tshuaj lom neeg no tshwm sim los ntawm qhov yooj yim hlau plam lawv cov electrons los ua cations (positively charged ions). Cov hlau feem ntau yog malleable thiab ductile thiab tuaj yeem deformed yam tsis muaj kev tawg
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