Nanoparticles

Question 1

Nanoparticles are really Tiny!

Answer 1

Nanoparticles have a diameter between 1nm (1 x 10-9m) and 100nm (1 x 10-7m) These are particles that contain only a few hundred atoms.

Question 2

Nanoparticles have a large surface area to volume ratio!

Answer 2

Surface area to volume ratio = Surface area / Volume

As particles decrease in size, the size of surface are increases in relation to their volume.

Nanoparticles have a very high surface area to volume ratio - this means the surface area is very large compared to the volume