it isn't possible.With no heat and water, you have no gas.
it depends since water can change back to its hydrogen and oxygen gas forms when electric currents are applied.
Heat transfer that does not cause a temperature change is called latent heat transfer. This occurs when heat is absorbed or released during a change in state (solid to liquid, liquid to gas) without changing the temperature of the substance.
Yes, it is possible to add heat to something without changing its temperature. This can happen during a phase change, such as when melting a solid into a liquid or evaporating a liquid into a gas, where the added heat provides the energy needed for the molecules to change their arrangement without a change in temperature.
A liquid can be changed to a gas below its boiling point by reducing the pressure above the liquid. This process, known as evaporation or vaporization, allows the liquid molecules to escape into the gas phase without adding heat energy. This is how clothes dry outside even on a cool day.
By heat
The heat of evaporation, also known as latent heat of vaporization, is the amount of energy required to change a substance from liquid to gas at its boiling point without changing its temperature. This energy is used to overcome the intermolecular forces holding the liquid together.
One way to add heat to a substance without raising its temperature is by changing its state of matter. This process, known as phase change, involves adding heat energy to a substance to change it from a solid to a liquid or from a liquid to a gas. During this phase change, the temperature of the substance remains constant until the phase change is complete.
Heat will change a solid into a liquid. This process is called melting. Heat will change a liquid into a gas. This process is called vaporization. Frozen carbon dioxide, or dry ice won't melt into a liquid. It will vaporize into carbon dioxide without melting. This process is called sublimation.
the amount of heat required to change the state from liquid to vapour of unit mass without changing the temperature
Latent heat of vapourisation can be define as the rate by which water is heat to vapourise, it has a difference with evaporation because evaporation occurs directly when the water start heatin while vapourisation always start in a specific temperature
You lose heat.
That's the heat of fusion.