The more the size of a small powder contains more volume per area. The chemical reaction can be done faster, which is called active content zinc oxide (ZnO Active) or nano zinc oxide (ZnO Nano)
The larger the size of the powder is small, it has a built-in capacity. The chemical can react faster. Which we will call ACTA dissociative ZnO (Active ZnO) or ZnO (Nano ZnO).
The size of the powder is a small area and volume. Can make the chemical reaction speed, which is called active zinc oxide (Active ZnO) or nano zinc oxide (Nano ZnO).