evaporation
When water turns to steam, it is called evaporation. This occurs when water reaches its boiling point and changes from a liquid to a gas.
Water vapour (commonly referred to as steam) is turned back into liquid by a process of condensation. When the warm vapour touches a cold surface (a window pane, for instance) the vapour cools and forms droplets of liquid water.
A condenser is the piece of equipment that changes steam and oil vapor to liquid. It works by cooling the vapor down until it reaches its dew point and condenses into a liquid form.
If the steam is transformed in a liquid this liquid can be evatporated again.
The tree phases of a matter are called Solid, liquid and gas. For example, water is present in the form of Ice, liquid water and water-vapour or steam.
steam or water vapour
The process when water changes into a gas is called evaporation. Evaporation occurs for pure water at 100 degrees celsius (-173 K) when water molecules begin to move around very rapidly and split up.
Steam. Not to be confused with vapor, which is a suspension of liquid water molecules in another gas.
Water - water, ice and steam/vapour
Gas is formed from evaporation when a liquid changes into a gas state at a temperature below its boiling point. Evaporation is the process by which molecules escape from the surface of a liquid into the air as vapor.
The steam when cooled changes back to liquid water
when liquid is boiled it convert into steam and become vapour