- 22710 1680x1050 atom, chemistry, molecule
- 14539 1680x1050 atom, molecule, chemistry
- 11569 1680x1050 atom, rings, stones
- 9757 1680x1050 atom, sphere, lines
- 8735 1680x1050 atom, molecule, element
- 25206 1680x1050 nucleus, atom, red
- 21120 1680x1050 chlorofluorocarbons, dichlor, molecule
- 2539 1680x1050 building, windows, architecture