My kid got a little round box of soapy solution at the fairground with a wire loop to blow bubbles with. She was pretty excited with it for few minutes, then lost interest. Kept it on her desk when she got back home.
The next morning, she tried to blow some more bubbles with it, but the soapy solution appeared to be as dead as plain water, i.e. zero bubbles came out when she tried with the wire loop.
What kills the “bubbleness” of soapy solution over time ? The concentration of the remaining solution should’ve remained the same since the box was closed shut overnight.
That’s a really interesting question, and questions like this were areas of active research in the earliest days of tissue culture; or specifically how to do the opposite, some times: how to effectively get the properties of soap without the bubbles.
Google tween 20, which is a product made for this specific purpose. However, I do know that in a lab setting, it maintain its properties a deal longer that 24 hrs.
I think your answer would depend on the nature of the soap solution used to create the bubbles. My guess would be that something is being oxydized, and with exposure to oxygen, the molecule responsible for the bubbles is reduced and not as effective.