1. Kachulukidwe: Kachulukidwe ndi chithunzi cha kuchuluka kwa zinthu zolimba mu zomatira. (1).Chigawo chachikulu mu International System of Units ndi kg/m³, ndipo zogulitsa zathu zimagwiritsidwa ntchito kwambiri: g/ml. (2).Njira yoyezera kachulukidwe ndi Kufunika kwake ①Miyeso