Kaalsiyeemii
Kaalsiyeemiin sibiilli lallaafaa adii meetawaa yoo ta’u, salphaatti elektiroonota lama dhabee faalkaa oksideeshinii +2 uuma. Innis elementii baay'inaan irralafaa keessatti argamu keessaa isa shanaffaa yoo ta'u, yeroo baay'ee dhagaa hoofii, jipsamii fi filooraayitii keessatti argama. Bishaan waliin haala giddu galeessaan walnyaatee kaalsiyeem haayidirooksaayidii fi gaasii haayidiroojiinii uuma. Kaalsiyeemiin sirna baayoloojii keessatti, keessumaa lafee fi ilkaan uumamuu, hojii maashaalee fi dhiigni akka dhangala’u keessatti gahee guddaa qaba. Industirii keessatti simintoo, hadiida hojjechuu, akkasumas xinsibiila keessatti akka hir’isutti fayyadama.