Eli5 what would happen if you had water in a completely sealed container and brought it past boiling temp

Question

Would it just turn into a pressurized container full of steam? Would the water stay water but just like, really hot?

In: 98

Answer 1

This exact question is what phase diagrams are for. What phase a particular substance is in depends on both temperature and pressure. [https://en.wikipedia.org/wiki/Phase_diagram#/media/File:Phase_diagram_of_water_simplified.svg](https://en.wikipedia.org/wiki/Phase_diagram#/media/File:Phase_diagram_of_water_simplified.svg)

Beyond critical point you can see there is no clear distinction between gas and liquid, such a state is called supercritical fluid [https://www.youtube.com/watch?v=-gCTKteN5Y4](https://www.youtube.com/watch?v=-gCTKteN5Y4)