Lability

Lability is the opposite of stability. Something is more labile if it is easier to move or change. The term is normally used in science, especially biology and chemistry.

 Chemistry 
In chemistry, "labile" can mean both an unstable chemical or reaction intermediate, or a stable but reactive chemical. It is also used to describe atoms or parts of a molecule that can be removed from molecules by chemical reactions, especially hydrogen atoms.

 Sources 

Category:Chemical reactions