Video: Yuav ua li cas koj thiaj paub tias ib yam dab tsi yog ib yam khoom dawb huv los yog sib tov?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
1. Cov tshuaj ntshiab tsis tuaj yeem muab cais ua lwm yam teeb meem, thaum a sib tov yog kev sib txuas ntawm ob lossis ntau dua cov khoom ntshiab . 2. A cov khoom ntshiab muaj tas li lub cev thiab tshuaj muaj zog, thaum sib tov muaj qhov sib txawv ntawm lub cev thiab tshuaj lom neeg (piv txwv li, boiling point thiab melting point).
Khaws qhov no rau hauv kev txiav txim siab, puas yog cov khoom ntshiab lossis sib xyaw?
A cov khoom ntshiab yog ib daim ntawv ntawm cov teeb meem uas muaj ib tug tas mus li muaj pes tsawg leeg thiab cov khoom uas tas mus li thoob plaws hauv cov qauv. Cov khoom xyaw yog lub cev sib xyaw ua ke ntawm ob lossis ntau lub ntsiab lus thiab / lossis cov khoom sib txuas. Cov khoom xyaw tuaj yeem muab faib ua homogeneous lossis heterogeneous.
Kuj Paub, dab tsi yog suav tias yog cov khoom ntshiab? Cov cov khoom ntshiab hauv chemistry yog ib lub tswv yim yooj yim heev los tuav. Cov tshuaj ntshiab raug txhais ua tshuaj uas yog tsim los ntawm ib hom atom lossis tsuas yog ib hom molecule (ib pawg ntawm atoms sib koom ua ke). Purity kuj tseem muaj feem cuam tshuam rau cov khoom siv tshuaj lom neeg ntawm a yam khoom.
Hauv qhov no, koj yuav txiav txim siab li cas yog tias ib qho khoom tsis paub yog ib qho ntshiab compound?
Txiav txim seb puas yog ib yam khoom yog tshuaj dawb huv . Yog nws yog dawb huv , cov yam khoom yog ib yam los yog ib compound . Yog ib yam khoom tuaj yeem muab cais ua nws cov ntsiab lus, nws yog a compound . Yog ib yam khoom tsis yog tshuaj lom neeg dawb huv , nws yog ib tug heterogeneous sib tov los yog homogeneous sib tov.
Tus qauv ntshiab yog dab tsi?
Hauv chemistry, a dawb huv cov khoom yog a qauv ntawm qhov teeb meem nrog ob qho tib si meej thiab tas li muaj pes tsawg leeg thiab cov khoom siv tshuaj lom neeg sib txawv. Kom tsis txhob muaj kev ntxhov siab, a dawb huv Cov tshuaj feem ntau hu ua "tshuaj lom neeg."
Pom zoo:
Yuav ua li cas koj thiaj paub tias ib yam dab tsi muaj nuj nqi los yog tsis?
LUS TEB: Cov lus teb piv txwv: Koj tuaj yeem txiav txim siab seb txhua lub ntsiab lus ntawm lub npe yog ua ke nrog ib qho ntawm qhov ntau. Piv txwv li, yog tias muab ib daim duab, koj tuaj yeem siv qhov ntsuas kab ntsug; Yog hais tias ib txoj kab ntsug hla cov duab ntau dua ib zaug, ces qhov kev sib raug zoo uas cov duab sawv cev tsis yog ib qho haujlwm
Yuav ua li cas koj thiaj paub yog tias ib yam dab tsi yog quadratic?
Peb tsuas yog tshawb xyuas qhov sib npaug. Yog hais tias, degree ntawm kev sib npaug sib npaug rau 2 ces tsuas yog nws yog ib qho kev sib npaug. Degree ntawm equation yog 2. Yog li ntawd, nws yog ib tug Quadratic Equation
Yuav ua li cas koj thiaj paub yog tias koj lub tsev nyob rau hauv lub dab dej?
Ntawm no yog 7 lub cim qhia ntau tshaj plaws hauv lub dab dej yuav tshwm sim: Ib puag ncig kev nyuaj siab nyob rau hauv lub ntiaj teb: Localized subsidence los yog kev nyuaj siab nyob txhua qhov chaw ntawm lub tsev: Lub pas dej ncig (los yog lub pas dej loj, tob): Lub hauv paus daws teeb meem: Kev tawg ntawm txoj kev lossis pavement : Cia li poob ntawm qhov dej hauv qhov chaw:
Yuav ua li cas koj paub yog hais tias ib yam khoom tshiab yog tsim nyob rau hauv ib tug tshuaj sib npaug?
Muaj cov cim qhia tias muaj tshuaj lom neeg tshwm sim. Npuas daim ntawv, ib tug roj yog muab tawm, thiab lub beaker tau kub heev. Lub cim tseem ceeb tshaj plaws uas muaj tshuaj lom neeg tshwm sim yog kev tsim cov tshuaj tshiab. Cov khoom tshiab yog cov pa roj carbon, lub nkig dub, thiab dej vapor, roj tsis muaj xim
Yuav ua li cas koj thiaj paub yog tias ib yam khoom tsoo hauv av?
VIDEO Tsis tas li ntawd, yuav ua li cas thaum ib yam khoom tsoo hauv av? Thaum lub yam khoom tsoo hauv av , lub zog kinetic yuav tsum mus rau qhov chaw, vim hais tias lub zog tsis yog tsim los yog puas, tsuas yog pauv mus. Yog hais tias kev sib tsoo yog elastic, lub ntsiab lus khoom tuaj yeem bounce, ntau lub zog nkag mus rau hauv ua kom nws rov qab los dua.