Video: Yuav ua li cas cov ntsiab lus sib koom ua ke?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov ntsiab lus feem ntau muab sib xyaw ua ke los ntawm ob hom tshuaj sib txuas: ionic bonding thiab covalent bonding. Nonmetal cov ntsiab lus feem ntau yog luv electrons thiab yuav covalently khi rau ib leeg los ntawm kev sib koom electrons. Thaum ib daim ntawv cog lus tau ua ntawm cov atoms sib txawv cov ntsiab lus , a compound tau tsim.
Raws li txoj cai, cov ntsiab lus tsim cov tebchaw li cas?
A compound yog ib yam khoom tsim thaum ob lossis ntau dua cov ntsiab lus yog chemically koom nrog. Dej, ntsev, thiab suab thaj yog piv txwv tshuaj sib xyaw . Thaum lub cov ntsiab lus koom nrog, cov atoms poob lawv tus kheej cov khoom thiab muaj cov khoom sib txawv ntawm cov cov ntsiab lus lawv muaj li.
vim li cas cov ntsiab lus sib koom ua ke los tsim cov tebchaw? Yuav luag tag nrho cov cov khoom sib xyaw ua ke rau form compounds , txawm tias qhov reactivity yuav txawv ntawm keeb rau keeb . Cov kev sib xyaw ua ke no tshwm sim vim tias yuav luag txhua qhov cov ntsiab lus tsis ruaj tsis khov. Los ntawm kev nce lossis poob electrons, ionic tshuaj sib xyaw raug tsim tawm. Kev sib koom ntawm cov khoom siv hluav taws xob ua rau tsim covalent tshuaj sib xyaw.
Yog li ntawd, yuav ua li cas atoms ua ke los tsim cov tebchaw?
Atoms ua ke nrog rau ib leeg daim ntawv ntau yam tshuaj sib xyaw . Qhov tsawg tshaj plaws ntawm ib yam khoom uas tuaj yeem nyob ntawm nws tus kheej yog hu ua molecule. Yog li ntawd, atoms ua ke nrog rau ib leeg daim ntawv molecules. Cov molecules no tuaj yeem tsim los ntawm ionic, metallic, covalent lossis hydrogen bonding.
Cov ntsiab lus dab tsi tuaj yeem sib xyaw ua ke?
Kev sib xyaw ua ke yog kev sib xyaw ntawm lub cev Qee zaum, cov ntsiab lus sib xyaw ua ke los ua ib qho kev sib txuas, uas yog ib pab pawg ntawm ob lossis ntau qhov sib txawv atoms chemically bonded ua ke. Cov no yog cov khoom xws li ntsev, uas yog sodium thiab chlorine, thiab methane, uas yog carbon thiab hydrogen.
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Lub dav hlau sib koom ua ke tuaj yeem pab koj txiav txim siab li cas cov tog neeg sib koom ua ke?
Muab ob daim duab peb sab ntawm lub dav hlau sib koom ua ke, koj tuaj yeem tshawb xyuas seb lawv puas sib haum los ntawm kev siv cov qauv nyob deb kom pom qhov ntev ntawm lawv sab. Yog hais tias peb khub ntawm sab yog congruent, ces daim duab peb sab yog congruent los ntawm saum toj no theorem
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
Dab tsi yog cov lej thiab cov lej rational Yuav ua li cas cov ntsiab lus kos rau ntawm lub dav hlau sib koom tes?
Raws li peb tau hais, cov ntsiab lus ntawm lub dav hlau sib koom ua ke yog sawv cev raws li (a, b), qhov twg a thiab b yog tus lej lej. Rational cov lej yog cov lej uas tuaj yeem sau ua feem, p / q, qhov p thiab q yog tus lej. Peb hu rau x-coordinate ntawm lub point thiab peb hu b tus y-coordinate ntawm lub point