Like a bubble, the air contained inside the thin fragile layer of solution, is only borrowed. Used to express the solution by which it is surrounded. A perfect balance of the air and solution.
The air is not the bubble, nor is the solution the bubble. The bubble is indeed the materials and the process to form said bubble.
The bubble is not its size nor its shape. It is not the type of solution. The bubble is not how long it lasts.
When the layer of solution can no longer contain the air. The bubble erupts and returns the solution to whence it came and the air returns to all air. All things one with themselves, without distinction until again the process repeats.