nice concept, however, the game seems quite buggy and unresponsive, (the first time i launched it, the bottle and green gases didn't appear). also, the game needs more, some sort of score system, and end... maybe power ups, ect. but right now, the game just isn't very interesting :( keep working on it though, it definitely has potential!
(btw, try to speed up your physics engine a little, it seems quite chunky when there are to many balls, are you disposing of them when they leave the screen?)