Isku-dhisyada iyo samayntooda

Soo dhawoow darsiga maanta ee ku saabsan xeryahooda (compounds) iyo sida ay u samaysmaan. Waa qayb ka mid ah cutubka loo yaqaan Atoms, Elements, and Compounds. Waa inaad hore u garanaysaa waxa ay yihiin curiyeyaasha (elements) iyo atom-yada, si aad u fahanto sida ay isugu xirmaan xeryahooda.