answer: for the research?
pero if not : distillation involves boiling the water to produce water vapour. the vapour contacts a cool surface where it condenses as a liquid. even distillation does not completely purify water, because of contaminants with similar boiling points and droplets of unvapourised liquid carried with the steam.
the correct electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁵
Yes, you can form the shadow of a fire, but perhaps not for the reason that you are thinking. A shadow is formed any time part of a light beam is blocked or redirected. The shadow region is the region in the light beam where there is less light than in the rest of the beam. This dimmer region tends to take on the shape of the object that is blocking or redirecting some of the light, so we tend to think of a shadow as something that is cast or created by the intercepting object. With this concept in mind, in order for a fire to have a shadow, the fire needs to somehow block or redirect part of another beam of light.