I came across a wonderful article by New York Times science writer, Knvul Sheikh, about what happens when you freeze a soap bubble: Surprisingly, a lot.
The article, "Watch Soap Bubbles Turn Into Tiny Snow Globes as They Freeze", informs us that:
Unlike water droplets, puddles or other liquid surfaces, the thin, rounded shape of bubbles makes them poor heat conductors. So when soap bubbles freeze, lacy crystals break off from cooler points on the surface and swirl around on currents of warmer liquid.
I have always found blowing bubbles to be one of the delights of springtime, particularly when it involves small children. Watch this video and see if a bit of the small child in you emerges as well: