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Is wetting tissue paper an exothermic process?

It can be, the process of hydration can be exothermic. The same thing is also observed when a dry cotton towels is rubbed on a wet face. One can feel mild release of heat from the towel. Water forms ...
AChem's user avatar
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1 vote

Is there a supercritical state for ice?

Water does not have a known critical point apart from the familiar one involving the usual liquid and vapor phases at about 374°C, 22 MPa. Cerium is a different story. The phase diagram pictured below ...
Oscar Lanzi's user avatar
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Is there a supercritical state for ice?

You ask three things at once, thinking they are one thing, which they are not. Does the solid/liquid line end with a critical point, like the liquid/gas line? No, it just keeps going on and on. Does ...
Ivan Neretin's user avatar
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