Covalent compounds (khoom, kua, tov) tsis ua hluav taws xob. Cov hlau thiab cov pa roj carbon (graphite) yog cov khoom siv hluav taws xob tab sis cov hlau tsis yog hlau yog cov hluav taws xob hluav taws xob. … Ionic tebchaw ua kua los yog thaum nyob rau hauv kev daws raws li cov ions tsis pub txav mus los.
Vim li cas covalent molecules ua hluav taws xob?
Covalent molecular structures tsis ua hluav taws xob vim cov molecules yog nruab nrab thiab tsis muaj nqi (tsis muaj ions lossis electrons) txav thiab nqa nqi.
Vim li cas hluav taws xob tsis tuaj yeem hla covalent compounds?
Covalent compounds tsim thaum cov atoms uas muaj cov txiaj ntsig electronegativity zoo sib xws tsim covalent tshuaj bonds. Thaum covalent compound dissolves nyob rau hauv dej, nws tsis dissociate rau hauv ions. Vim tsis muaj cov hluav taws xob dawb lossis ions hauv dej (electrolytes) yaj covalent compounds tsis tuaj yeem ua hluav taws xob.
Yuav ua li cas ua hluav taws xob?
Kev siv hluav taws xob
Ionic cov tebchaw ua hluav taws xob thaum molten (kua) lossis hauv cov kua dej (solved hauv dej), vim tias lawv cov ions tsis pub txav los ntawm qhov chaw mus rau qhov chaw. Ionic tebchaw tsis tuaj yeem ua hluav taws xob thaum muaj zog, vim lawv cov ions tau tuav hauv txoj haujlwm ruaj khov thiab tsis tuaj yeem txav mus.
Vim li cas covalent compounds flammable?
3) Covalent cov khoom sib txuas zoo li ua kom muaj hluav taws ntau dua li ionictshuaj sib xyaw. Qhov laj thawj tseem ceeb uas cov khoom kub hnyiab yog vim lawv muaj cov pa roj carbon thiab hydrogen atoms uas tuaj yeem ua rau cov pa roj carbon dioxide thiab dej thaum rhuab nrog cov pa roj carbon monoxide(qhov no yog lub ntsiab lus ntawm kev sib xyaw combustion).
