How do you know the state an element at a certain temeperture?

Niamh O'Sullivan

e.g. the melting point of hydrogen sulphide Is -85 degrees and its boiling point is -61 degrees. What is its state at 25 degrees?

Anything below its melting point is a solid.
Anything above its melting point and below its boiling point is a liquid
Anything above it boiling point is a gas
25 degrees is above the boiling point (which is -61 degrees)
So this must be a.........

Tabitha Farrant