It is a solid.
The state of matter would be solid, because 25 degrees Celsius is "room Temp."
Mercury's state at 25 degrees Celsius is liquid.
Hydrogen is a gas at 25 degrees Celsius.
Nitrogen would be a gas at 25 degrees Celsius.
The state of water at -25 C is solid. Water freezes at 0 degrees Celsius.
solid
liquid
Chlorine is a solid at 0 degrees celsius because it's also a solid at 25 degrees celsius.
the state is solid
liqiud
solid
solid