Video: Dab tsi yog qhov hloov pauv hauv chemistry?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A ib leeg - kev hloov pauv hloov , kuj hu ua a ib leeg - hloov tshuaj tiv thaiv, yog ib hom tshuaj cov tshuaj tiv thaiv qhov twg ib lub ntsiab reacts nrog ib tug compound thiab yuav siv qhov chaw ntawm lwm yam nyob rau hauv lub compound. Hom tshuaj tiv thaiv no feem ntau pom zoo li no: Ntawm no, A hloov B hauv qhov sib xyaw BC.
Kuj paub, piv txwv ntawm ib qho kev hloov pauv ib zaug yog dab tsi?
Kev hloov pauv ib leeg . A ib zaug hloov cov tshuaj tiv thaiv tshwm sim thaum ib lub caij hloov lwm lub hauv ib ib leeg compound. Ib piv txwv ntawm ib qho kev hloov pauv tshwm sim thaum poov tshuaj (K) reacts nrog dej (H2O). Cov khoom tsis muaj xim muaj npe hu ua potassium hydroxide (KOH) cov ntaub ntawv, thiab hydrogen gas (H2) yog teem dawb.
Tsis tas li ntawd, ua li cas koj thiaj paub yog tias qhov kev tshwm sim yog ib qho kev hloov pauv? Paub a Ib leeg - Kev Tawm Tsam Tawm Koj tuaj yeem twv seb a ib leeg - kev hloov pauv hloov yuav tshwm sim los ntawm kev sib piv cov reactivity ntawm ib lub caij siv lub rooj ua si series. Feem ntau, cov hlau tuaj yeem hloov tau cov hlau qis dua hauv cov haujlwm ua haujlwm (cations). Tib txoj cai siv rau halogens (anions).
Ib yam li ib tug yuav nug, qhov txawv ntawm ib leeg thiab ob qhov kev hloov pauv yog dab tsi?
A ib leeg - hloov cov tshuaj tiv thaiv hloov ib lub ntsiab rau lwm tus hauv a compound. A ob npaug - hloov Cov tshuaj tiv thaiv pauv cov cations (los yog anions) ntawm ob ionic compounds.
Kev hloov pauv ib leeg siv li cas hauv peb lub neej txhua hnub?
Ib txhua hnub yam khoom uas peb siv uas yog qhov tshwm sim ntawm a ib qho kev tshem tawm yog rooj ntsev. Thaum calcium chloride reacts nrog sodium, qhov tshwm sim yog sodium chloride thiab calcium. Sodium chloride yog lub rooj ntsev. Txhua lub sij hawm ib tug yooj yim hlau reacts nrog ib tug acid, nws yog ib tug ib qho kev hloov pauv hloov.
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
Dab tsi ua rau muaj qhov hloov pauv hloov pauv?
Point kev hloov. Point mutation, hloov nyob rau hauv ib tug noob nyob rau hauv uas ib tug hauv paus khub nyob rau hauv lub DNA ib theem zuj zus yog hloov. Kev hloov pauv ntawm cov ntsiab lus feem ntau yog tshwm sim los ntawm kev ua yuam kev thaum lub sij hawm DNA replication, txawm hais tias kev hloov pauv ntawm DNA, xws li los ntawm kev cuam tshuam rau X-rays lossis rau ultraviolet hluav taws xob, kuj tuaj yeem ua rau muaj kev hloov pauv
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