Nyob rau hauv chav tsev kub (txhua qhov chaw ntawm xoom degree centigrade mus rau 100 degrees centigrade), dej muaj nyob rau hauv lub xeev ua kua. Qhov no yog vim qhov me me, tsis muaj zog hydrogen bondsuas, hauv lawv cov billions, tuav cov dej molecules ua ke rau ib feem me me ntawm ib ob. Cov dej molecules tau txav mus tas li.
Vim li cas dej thiaj yog kua hauv chav ntsuas kub?
Nws yog kua vim hydrogen bonding. Thaum dej yog kua nws cov molecules nyob ze dua thaum nws yog ib qho khoom.
Puas yog kua ntawm chav tsev kub teb?
Tsuas yog cov kua dej ntawm tus qauv ntsuas kub thiab siab yog bromine (Br) thiab mercury (Hg). Txawm hais tias, cov ntsiab lus cesium (Cs), rubidium (Rb), Francium (Fr) thiab Gallium (Ga) ua kua ntawm lossis siab dua chav tsev kub.
Vim li cas dej yog kua hauv chav tsev kub thaum cov pa roj carbon dioxide yog roj ntawm chav tsev kub?
Dej muaj zog hydrogen bonds tuav cov molecules ua ke tab sis CO 2 tsuas muaj dispersion rog ua haujlwm ua cov rog intermolecular. Lub zog tsis muaj zog ntawm lub cev tsis muaj zog piav qhia vim li cas CO2 yog roj whereas H2O yog cov kua hauv chav sov.
Vim li cas dej thiaj yog kua hauv chav tsev kub thiab ammonia yog roj?
Kev piav qhia: Dej yog ib qho molecule ntawm qhov hnyav tsis zoo: 18.01⋅g⋅mol−1. Qhov no tsawg dua ammonia, lossis dioxygen, lossis dinitrogen, me ntsis ntau dua li methane, tab sis tseem tsawg dua ethane, thiab propane. Thiab tseem tag nrho lwm cov molecules no yog GASES nyob rau hauv chav tsev kub, thiab muaj ib txwm boiling ntsiab lus hauv qab no dej.