dej hiav txwv khov ib yam li dej tshiab, tab sis nyob rau qhov kub thiab txias. Cov dej tshiab khov ntawm 32 degrees Fahrenheit tab sis dej hiav txwv khov ntawm li 28.4 degrees Fahrenheit, vim yog ntsev hauv nws. … Cov dej hiav txwv yuav hnyav dua thaum nws txias dua, txoj cai nqes mus rau qhov chaw khov.
Vim li cas dej ntsev tsis khov?
Yog vim li cas qhov no yog khi rau sodium chloride ions hauv cov dej ntsev, qhia ntawm no ua lub voj voog xiav thiab liab. Cov khoom them nqi no cuam tshuam qhov sib npaug ntawm cov molecules, ua rau cov dej molecules uas tuaj yeem txuas rau cov dej khov molecules kom txo qis. Dej yog li khov ntawm tus nqi qeeb.
Thaum dej ntsev khov dab tsi tshwm sim rau ntsev?
Nej twb paub lawm tias thaum dej ntsev pib khov lawm, nws tsis suav cov ntsev los ntawm cov ntsev ntsev, yog tias koj khaws cov dej khov rau thaum lawv pib khov., ntsev concentration yuav qis dua li cov kua uas seem.
Puas ntsev dej khov ntawm 0 degrees?
Cov ntsev ntau hauv dej hiav txwv dej txo nws qhov chaw khovntawm 32 ° F (0 ° C) txog 28 ° F (-2 ° C). Raws li qhov tshwm sim, qhov kub thiab txias yuav tsum ncav cuag qhov qis dua txhawm rau txhawm rau khov dej hiav txwv dua kom khov cov pas dej tshiab.
Puas ntsev dej ua dej khov?
Cov dej molecules yuav tsum tau qeeb qeeb dua nyob rau hauv muaj ntsev thiaj li tsim tau ib qho khoom. Yog li koj yuav tsum mus rau qis duakub kom khov dej uas muaj ntsev. Ntsev tsis suav nrog hauv kev tsim cov dej khov; yog li no dej khov ua los ntawm cov dej ntsev yog qhov tseem ceeb tsis muaj ntsev.
