Video: Cov ntsiab lus twg yog isotopes?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Isotopes (Stable) ntawm cov khoom
| Hydrogen | 1H, 2H |
|---|---|
| Lithium | 6Li, 7Li |
| Beryllium | 9Ua |
| Boron | 10B, 11B |
| Cov pa roj carbon | 12C, 13C |
Ib yam li ntawd, nws tau nug, ua li cas koj paub tias cov ntsiab lus twg yog isotopes?
Saib ntawm lub atom ntawm lub rooj zaum ntawm lub sijhawm cov ntsiab lus thiab nrhiav pom nws lub atomic mass yog dab tsi. Tshem tawm tus naj npawb ntawm protons los ntawm atomic mass. Qhov no yog tus naj npawb ntawm cov neutrons uas niaj hnub version ntawm lub atom muaj. Yog hais tias tus naj npawb ntawm neutrons nyob rau hauv lub atom yog txawv, nws yog ib tug isotope.
Ib yam li ntawd, qee qhov piv txwv ntawm isotopes yog dab tsi? Qee qhov piv txwv ntawm ruaj khov isotopes yog isotopes carbon, potassium, calcium thiab vanadium. Xov tooj cua isotopes muaj qhov tsis ruaj khov ua ke ntawm protons thiab neutrons, yog li lawv muaj cov nuclei tsis ruaj khov. Vim cov no isotopes tsis ruaj tsis khov, lawv raug kev puas tsuaj, thiab hauv cov txheej txheem tuaj yeem tso tawm alpha, beta thiab gamma rays.
Ua li no, cov ntsiab lus twg yog isotopes ntawm ib leeg?
Tus naj npawb ntawm nucleons (ob leeg protons thiab neutrons) nyob rau hauv lub nucleus yog tus lej ntawm atom, thiab txhua lub isotope ntawm ib lub ntsiab lus muaj cov lej sib txawv. Piv txwv li, carbon -12, carbon -13, thiab carbon -14 yog peb isotopes ntawm lub caij carbon nrog rau cov lej 12, 13, thiab 14, feem.
Puas yog txhua lub ntsiab lus yog isotope?
Yog lawm, tag nrho cov ntsiab lus muaj isotopes . Ib isotope yog tej variant ntawm ib keeb uas muaj tus naj npawb ntawm neutrons. Muaj ntau ntau cov ntsiab lus uas tsuas muaj ib txwm tshwm sim isotope los yog ib leeg xwb isotope uas tshwm sim nyob rau hauv ntau tshaj ib tug kab nyob rau hauv lub ntiaj teb no.
Pom zoo:
Lub ntsiab lus ntawm lub hauv paus lo lus meter nyob rau hauv lo lus tus pas ntsuas kub yog dab tsi?
Lub hauv paus chiv keeb ntawm lo lus 'Thermometer' Qhov thib ob ntawm lo lus, 'meter', los ntawm Fabkis -mètre (uas muaj nws cov hauv paus hauv lub post-classical Latin: -meter, -metrumand lub ancient Greek, -Μέτρο ν, lossis metron, uas txhais tau tias ntsuas qee yam, xws li qhov ntev, qhov hnyav, lossis dav)
Dab tsi yog lub ntsiab lus ntawm kev hloov pauv lom neeg hauv cov ntsiab lus ntawm allele zaus?
Microevolution, los yog evolution ntawm ib tug me me, yog txhais raws li ib tug kev hloov nyob rau hauv lub zaus ntawm noob variants, alleles, nyob rau hauv ib tug pej xeem ntau tiam. Lub teb ntawm biology uas kawm txog allele frequencies nyob rau hauv cov pejxeem thiab yuav ua li cas lawv hloov lub sij hawm yog hu ua pej xeem noob caj noob ces
Cov ntsiab lus twg feem ntau yuav tau txais cov hluav taws xob hauv cov tshuaj lom neeg?
Cov hlau tsis yog hlau yuav tau txais cov khoom siv hluav taws xob kom tau txais Noble Gas teeb tsa. Cov muaj kuj muaj Electron affinities thiab siab Ionization energies. Cov hlau zoo li plam electrons thiab cov hlau tsis yog hlau yuav tau txais electrons, yog li hauv kev cuam tshuam nrog ob pawg no, muaj kev hloov hluav taws xob los ntawm cov hlau mus rau cov hlau tsis yog hlau
Vim li cas cov ntsiab lus thiab cov ntsiab lus yog cov tshuaj ntshiab?
Elements thiab compounds yog ob qho tib si piv txwv ntawm cov khoom ntshiab. Ib yam khoom uas tuaj yeem tawg mus rau hauv cov tshuaj lom neeg yooj yim dua (vim tias nws muaj ntau dua ib qho) yog ib qho khoom sib xyaw. Piv txwv li, dej yog acompound tsim los ntawm cov ntsiab lus hydrogen thiaboxygen
Puas yog cov ntsiab lus uas muaj cov tshuaj lom neeg zoo sib xws yuav pom nyob rau tib lub sijhawm lossis hauv tib pab pawg piav qhia koj cov lus teb?
Qhov no yog vim hais tias cov tshuaj muaj zog nyob ntawm tsis muaj valence electrons. Raws li nyob rau hauv ib pawg tag nrho cov ntsiab lus muaj tib yam tsis muaj valence electron uas yog vim li cas lawv muaj cov tshuaj zoo sib xws tab sis nyob rau hauv ib lub sij hawm tsis muaj valence electron sib txawv uas yog vim li cas lawv txawv nyob rau hauv chemical zog