water freezes at 0o celsius, so at -15oC it would be solid
gas
At 50 degrees Celsius, water is liquid. It boils and becomes gas at 100 degrees Celsius, and freezes and becomes solid at 0 degrees Celsius.
At 20 degrees Celsius krypton is a gas. You would have to bring the temperature way down to just below -153.22 (yes, negative!) degrees Celsius for krypton to become a liquid, and just below -157.36 degrees Celsius to make it a solid!
Simple answer SOLID melting point 1211k
20 degrees Celsius is about room temperature. At room temperature, mercury is a liquid.
The state of matter would be solid, because 25 degrees Celsius is "room Temp."
Hydrogen is a gas at 25 degrees Celsius.
Nitrogen would be a gas at 25 degrees Celsius.
gas
A solid
A gas.
gas
solid
a gas
The state of matter of mercury and the motion of its particles as it is heated from 45 degrees Celsius to 356 degrees Celsius is 46 million.
At 50 degrees Celsius, water is liquid. It boils and becomes gas at 100 degrees Celsius, and freezes and becomes solid at 0 degrees Celsius.
A solid I believe.