* Chemical Bonding: Sodium and chlorine react to form an ionic bond. This means that sodium loses an electron to become a positively charged ion (Na+), and chlorine gains an electron to become a negatively charged ion (Cl-). These oppositely charged ions attract each other strongly, forming a crystal lattice structure.
* Physical Properties: Sodium and chlorine are both highly reactive elements. Sodium is a soft, silvery metal that reacts violently with water. Chlorine is a greenish-yellow, toxic gas. Sodium chloride, on the other hand, is a white, crystalline solid that is non-toxic and readily dissolves in water.
* Chemical Properties: Sodium and chlorine have distinct chemical properties. Sodium is a strong reducing agent, while chlorine is a strong oxidizing agent. Sodium chloride, however, is a relatively inert compound that does not readily react with most substances.
In summary, sodium chloride is a completely new substance formed by a chemical reaction between sodium and chlorine. It exhibits entirely different physical and chemical properties compared to its constituent elements due to the ionic bonding and the resulting crystal lattice structure.