THREE TYPES OF PARTICLES

Particles forming matter

Atom    :

             The simplest form of particles (basic unit of mater)

Example:

             All metals and some non-metals,such as graphite and diamond are made up of only one type of atom

Molecule: 

              Particles made up of a combination of two or more atoms in certain arrangements through     chemical bonds

Example:

              Almost all non-metal elements such as bromine Br2,napthalene,benzene,C6H6,and water,H2O,are made of molecules

Ion       :

              Particles made of atoms which receive or lose electrons

Example:

              Ionic subtances such as sodium chloride,NaCl, lead (II) bromide, PbBr2, and potassium  hydroxide,KOH, are made up of ions.