Nanoparticles
A structure that is 1 - 100 nm in size are between 1 and 100 nanometres (nm) in size and are made up of a few hundred An atom is the simplest particle of an element that can exist on its own in a stable environment..
A nanoparticle has a very large The total area of all sides on a 3D shape. compared to its The volume of a three-dimensional shape is a measure of the amount of space or capacity it occupies..
The properties of Useful substances containing nanoparticles. substances are different from those of the same atoms in bulk such as powders, lumps or sheets.
One nanometre is 1 脳 10-9m or 0.000000001 m.
Surface area to volume ratio
Smaller structures have a larger surface area to volume ratio than larger ones. You can demonstrate this mathematically.
When the length of a side of a cube is decreased by a factor of 10 (10 cm to 1cm), the surface area to volume ratio increases by a factor of 10 (0.6:1 to 6:1).