I-chemical compound yenziwe ngamachiza amaninzi afanayo (okanye ama-molecular entities) ahlanganiswe ngama-athomu avela ngaphaya kweyodwa into ebanjwe kunye nezibophelelo zeekhemikhali. I-chemical element ehlanganiswe kwizinto ezinxulumene neekhemikhali ayikho into eyenziwa ngamakhemikhali kuba isakhi esinye kuphela, asikho izinto ezimbini ezihlukeneyo, ezibandakanyekayo.

Kukho iintlobo ezine zeemveliso, ngokuxhomekeke kwindlela ama-atom asebenza ngayo abanjwe ndawonye:

iimlekyuli eziqhutywe ndawonye kunye nezibophelelo ezidibeneyo
iicon ihlanganiswe ndawonye kunye nezibophelelo ze-ionic
izixhobo ezidibeneyo ezihlanganiswe kunye nezibophelelo zetsimbi
ezinye iindidi ezidibeneyo zihlangene kunye ngokulungelelanisa izibophelelo eziqinileyo.

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