Copper
A reddish metal, is one of the few elements that is sometimes found in a pure form, rather than being mixed with other elements in a compound.

Carbon atom
This is a single atom of carbon. In the middle, it has a nucleus made of six neutrons. Six tiny particles called electrons spin around them. Carbon atoms are good at making molecules, because they can link up with lots of other atoms. As well as plastics, they are found in thousands of other substance, including most of the ones in living things.