* Chemical Bonding: Compounds are formed when two or more elements chemically bond together. This bonding results in a completely new substance with different properties.
* New Arrangement of Atoms: In a compound, the atoms of the constituent elements are arranged in a specific way, leading to a different structure and electron configuration compared to the individual elements.
* Emergent Properties: The properties of a compound arise from the interactions between the atoms of the constituent elements. These interactions are not present in the individual elements.
Example:
* Sodium (Na) is a highly reactive metal.
* Chlorine (Cl) is a poisonous gas.
* Sodium Chloride (NaCl), also known as table salt, is a stable, non-reactive crystalline solid.
Key Differences:
* Physical Properties: Melting point, boiling point, density, color, etc. of a compound will be different from the elements it is composed of.
* Chemical Properties: Reactivity, acidity, basicity, flammability, etc., will also be different.
In summary: While compounds are made up of elements, the combination of elements through chemical bonding results in a new substance with unique and different properties.
