system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Can bubbles be made in any liquid, or are there types of liquid that actually cannot create bubbles?

I know that bubbles are just little pockets of air that didn't break surface tension of liquid, but are there any types of liquid that cannot make bubbles at all?
gpt
By definition, and as you said already, a bubble is just a pocket of gas in a liquid.

So, to avoid bubbles, we just have to be in such conditions that gas cannot exist. Simple enough.

Since Helium has the lowest liquefaction temperature of any element, at 5 K (or -268.15 °C), no gas bubbles could form inside liquid helium, as no element could be in gas state.