This is always the case in a decomposition reaction. Don't forget that!! Figuring out what the products are in decomposition is harder (maybe you'll think it's easier!!) because you will have to recognize several categories of decomposition reactions.
Geology. a small, usually spherical cavity in a rock or mineral, formed by expansion of a gas or vapor before the enclosing body solidified. Origin of vesicle.
In general, the term vesicle refers to a small sac or cyst that contains fluid or gas. In cell biology, vesicle refers to the bubble-like membranous structure that stores and transports cellular products, and digests metabolic wastes within the cell. The cell forms vesicles during exocytosis, endocytosis, and intracellular transport.