1001 Space Earth Nature History Human World Science and Technology Chemistry Materials Force and Energy Heat and Light Electricity and Magnetism Industry Machines Electronics and Computers Cars and Trucks Railways Ships Aircraft Fishing and Agriculture Undersea Exploration	How big is an atom? Atoms vary in size, but a carbon atom, for example, is so small that there are 1,000 million of them in the ink in the period at the end of this sentence. A diagram of an atom   Previous: Back Book: 1001 Section: Science and Technology Chapter: Chemistry