Video: Dab tsi yog atoms thiab cov ntsiab lus sib xws?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lawv tuaj nyob rau hauv ntau hom, hu ua cov ntsiab lus, tab sis txhua atom sib koom tej yam ntxwv zoo sib xws. Tag nrho atoms muaj a ntom central core hu ua atomic nucleus. Tag nrho cov atoms muaj tsawg kawg yog ib tug proton hauv lawv core, thiab cov tus lej ntawm protons txiav txim seb hom ntawm lub atom yog dab tsi.
Tsis tas li lo lus nug yog, dab tsi ua rau tag nrho cov atoms ntawm ib lub caij muaj sib xws?
Cov feem ntau feature yog tias cov atoms ntawm tag nrho cov ntsiab lus muaj xws li electrons, protons, thiab neutrons.
Tsis tas li ntawd, atoms ntawm tib lub caij zoo sib xws thiab txawv li cas? Cov atoms ntawm ib qho tshuaj keeb tuaj yeem nyob hauv txawv hom. Cov no yog hu ua isotopes. Lawv muaj ib yam tus naj npawb ntawm protons (thiab electrons), tab sis txawv naj npawb ntawm neutrons. Vim txawv isotopes muaj txawv tus naj npawb ntawm neutrons, lawv tsis tag nrho cov hnyav ib yam los yog muaj ib yam pawg.
Kuj tseem xav paub, dab tsi atoms thiab cov tebchaw muaj sib xws?
A compound yog molecule ua los ntawm atoms los ntawm cov ntsiab lus sib txawv. Tag nrho tshuaj sib xyaw yog molecules, tab sis tsis yog tag nrho cov molecules tshuaj sib xyaw . Muaj ob yam tseem ceeb ntawm cov tshuaj tiv thaiv uas tuav atoms Ua ke: covalent thiab ionic / electrovalent bonds. Atoms uas sib koom electrons nyob rau hauv ib tug chemical bond muaj covalent bonds.
Yuav ua li cas atoms tsim teeb meem?
Atoms yog qhov yooj yim tsev blocks ntawm dog dig teeb meem . Atoms tuaj yeem koom ua ke los tsim cov molecules, uas ua rau feem ntau ntawm cov khoom nyob ib puag ncig koj. Atoms yog tsim los ntawm cov khoom hu ua protons, electrons thiab neutrons.
Pom zoo:
Dab tsi yog qhov sib txawv ntawm kev sib tw thiab cov lej sib xws?
Peb siv cov lej sib xws los ua kom qhov teeb meem yooj yim dua los daws hauv peb lub taub hau los ntawm kev hloov txhua tus lej mus rau qhov ze tshaj kaum, nees nkaum, tsib caug lossis puas. Tab sis yog tias peb ua cov lej sib xws thiab sib npaug mus rau qhov ze tshaj plaws puas lossis kaum qhov chaw, 300 thiab 350 yog qhov yooj yim dua los suav hauv peb lub taub hau
Puas yog atoms ua los ntawm cov ntsiab lus los yog cov khoom tsim tawm ntawm atoms?
Atoms yeej ib txwm ua los ntawm cov khoom. Atoms qee zaum ua los ntawm cov khoom. Lawv txhua tus muaj ob tsab ntawv hauv lawv cov cim atomic. Cov muaj pes tsawg leeg
Vim li cas cov ntsiab lus thiab cov ntsiab lus yog cov tshuaj ntshiab?
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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
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no