Steam is formed at 100°C but I see “steam” being produced at less than that temperature. What is that and why isn’t it steam?
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a thing has got a state of aggregation, that means, it is solid, fluid, gas or plasma (like a flame for example). every thing can have different states of aggregation, water can be ice, water or steam. to change from one state to another, a big amount of energy is necessary. we dont realize it when water melts, because we do not feel hot at temperatures that melt ice, but in fact we are.
now if water turns into steam, the energy inside the pot is not the same everywhere. the water moves up, colder and hoter water mix up and than there are areas where there is enough energy to jump from fluid to steam and other areas, where it is not hot enough.
its a little bit like doves on the ground picking food and than a crow flies over them. the doves that are near to the crow feel fear first, so they start first flying away, while the others see the crow later and stay longer. the crow is the energy that is necessary to make the doves start.
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