Y
Whipped cream yog a colloid. Nws muaj cov roj hauv cov kua, yog li nws yog npuas. Sol yog ib qho kev ncua colloidal nrog cov khoom hauv cov kua.
hom tshuaj twg yog nplawm nplaum?
Chemistry of Cream
Whipped cream is a foam-a suspension of gas bubbles in other substance. Tsis zoo li cov qe ua npuas dej, uas ruaj khov los ntawm cov protein, whipped cream yog stabilized los ntawm nws tus kheej rog.
piv txwv ntawm colloid yog dab tsi?
Colloids muaj nyob hauv lub neej txhua hnub. Qee qhov piv txwv suav nrog nplawm nplaum, mayonnaise, mis nyuj, butter, gelatin, jelly, dej nkos, plaster, iav xim, thiab ntawv. Txhua colloid muaj ob ntu: colloidal hais thiab qhov nruab nrab dispersing.
piv txwv tsis yog colloid yog dab tsi?
Yog li, ntshav yog ib qho colloid. Hauv kev xaiv D, urea tov muaj urea yaj hauv dej. Cov tshuaj muaj urea ua kua thiab dej raws li hnyav thiab ob leeg nyob rau tib theem. Yog li, urea tov tsis yog colloid.
Yuav ua li cas peb thiaj paub tias qhov sib tov no yog ib qho colloid?
txhawm rau txheeb xyuas qhov sib xyaw colloid los ntawm kev daws, koj tuaj yeem siv Tyndall effect. Qhov no yog qhov uas koj hla lub teeb los ntawm kev sib tov. Yog hais tias lub teeb bounces tawm cov hais, koj yuav pom lub teeb ci los ntawm thiab koj muaj ib tug colloid sib tov.
