Documents The Atom

The Atom The Atom Smallest particle of an element that retains the properties of the element The beginning Democritus first suggested the existence of atoms in the 4th century…

Documents Particle electron neutron proton Relative charge Relative mass Subatomic particles Atoms are...

Subatomic particles Atoms are composed of three subatomic particles: protons, neutrons and electrons. The two important properties of these particles are mass and charge:…