Steam
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Steam is the name given to water when it is a gas.
When the pressure of the atmosphere is 1013 mbar (this is about the average pressue for a place which is at sea level), water will boil (turn into steam) at 100 degrees celsius.
100 degrees Celsius is the same temperature as 212 degrees Fahrenheit, 80 degrees Réaumur and 373,15 Kelvin.