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steam is water evaporating. It is caused when water molecules have enough energy to break free from the electromagnetic interactions that holds all the water together as a liquid. Short form - steam is water so when it is hot it turns into gas.
it is a plumbing term for a funnel which provides an air break for something like a water heater which has a pressure relif valve. Discharge may sometimes be hot or cold water or steam. It allows the steam to escape
This was a steam/water leak in a steam generator, probably brought on by inadequate chemistry control in the secondary water side. Faced with the prospect of the cost of replacing the steam generators, the owners decided to shut the plant permanently, and it has been partly decommissioned with all the fuel removed.
Steam is water!
As the temperature increases and the water approaches its boiling condition, some molecules attain enough kinetic energy to reach velocities that allow them to momentarily escape from the liquid into the space above the surface, before falling back into the liquid. Further heating causes greater excitation and the number of molecules with enough energy to leave the liquid increases. As the water is heated to its boiling point, bubbles of steam form within it and rise to break through the surface. Considering the molecular structure of liquids and vapours, it is logical that the density of steam is much less than that of water, because the steam molecules are further apart from one another. The space immediately above the water surface thus becomes filled with less dense steam molecules. When the number of molecules leaving the liquid surface is more than those re-entering, the water freely evaporates. At this point it has reached boiling point or its saturation temperature, as it is saturated with heat energy. Basically steam is invisible. What your seeing is not steam. Its the point at which the warm air (from the kettle) meets the cold air.
Fire+Water=Steam
Ice to water to steam.
Because they're not glued permanently to stick together forever. ..yeah!! that's it.
Pull your head out of the water momentarily and breathe deeply.
steam is water
Fountain like jets of water and steam
Steam is water in the state of gas