Umumbu
Appearance
I-Substance yi material, noma yi matter, okuyiyo esetshenziswa ekwakheni into ethize. Ama-substance izinto ezi physical ezibonwayo, ezithintekayo, noma ezikalekayo. Zenziwe yi elemental part eyodwa noma amaningi. Insimbi, yi aluminiyamu, amanzi kanye nomoya ngumzekelo wama substances.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/18/Kochendes_wasser02.jpg/220px-Kochendes_wasser02.jpg)