👉 Unliquefied is a concept in chemistry and physics that refers to an element or substance that is not fully in its liquid form. In other words, it is a state of matter where the atoms are held together through a combination of hydrogen bonds and van der Waals forces rather than purely being in a solid form (liquid). This means that when you combine elements like carbon dioxide with water vapor, they can exist as an unliquefied mixture or as a liquid.