Compounds cannot be broken down by physical forces. Chemical forces are forces caused by other compounds, or molecules. There are millions of compounds everywhere. Chances are, everything you can see is one type of compound or another. When elements join together and become compounds they lose their individual traits.
Sodium alone is very reactive.
The compound has none of the traits or the original elements. It has a new life of its own. Most compounds are made up of combinations of bonds. If you look at Sodium chloride it is held together by one ionic bond. One Magnesium and two Chloride atoms.