Particle Matter 2

                                        Ion

     You have understood that there area charged particle in atom. Some particles types in atom also have different electron is negative and proton is positive, while neutron is neutral. But, atom will obtain or loss electron if incorporated with the other atoms. This cause the atom has positive or negative charged. The charged atom is called ion. So, ion is atom or atom cluster containing electrical charge. Process of ion establishment is called ionization. If an atom loss electron , the atom will be positive. The atom like this called terion atom.

     Generally, compound consist of molecules. For example, sugar compound is composed of sugar molecules. But ,there are compounds composed of ions. A compound composed of ions called ion compound, for example common salt. Common salt if dissolved in water will be subdivided to form ion, namely sodium ion with positive charge (Na⁺) and chloride ion with negative charge (Cl^-). Positive ions called Cation and negative ions called Anion. Cation is usually derives from metal element, for example Silver (Ag⁺) and Copper (Cu²⁺). Anion derived from no-metal element, for example Iodine (I^-) and Sulphur (S^2-).