what are nanoparticles gcse chemistry?
Nanoparticles. Nanoparticles are structures, 1-100 nanometres (nm) in size, that usually contain only a few hundred atoms . This means that nanoparticles are around 100 times larger than atoms and simple molecules . 1 nm is 1 x 10 -9 m (or 0.000,000,001 m).