Are Atoms really small?

If a millimeter were an Angstrom, which is a ten billionth of a meter, and roughly the size of most atoms, it is easy to give a sense of scale for things that are as small as atoms, molecules, etc....

This Carbon Atom, above would be 1.2 mm accross about the size of a moderate grain of sand. (much smaller then the picture, but still visible) Roughly the size of the smallest metric unit on most rulers. How big would more familiar objects be in comparison.

Well, a red blood cell would be 60-80 meters across. And above you can also see a spider, an earthworm, a petri dish, and a penny if an Angstrom were a millimeter. The penny would weigh 2.75 quadrillion tons, a 16 digit number of tons. Each copper atom, about twice as big as the carbon atoms would weigh individually 105 milligrams. So this gives you a gross idea of the scale of atoms compared to planet sized people.