Part one of term paper
The concept of the atom has existed since the 5th century BC, but it was not until the beginning of the 19th century that this concept was developed into a scientific theory. Almost as soon as the modern atomic theory was established, it was discovered that atoms were not the basic building blocks that were being sought. Instead, atoms consis ...

Part two of term paper
... of three kinds of elementary objects: quarks, which make up neutrons and protons; leptons, which include electrons and some similar particles; and bosons, or vector mesons, which include the photons seen as light and which carry the electromagnetic force. Some scientists suggest that leptons and quarks may actually be the same object but in different states. Bosons, too, may be this same object but in still another state. The everyday world is made of molecules. Because molecules are so small, ...