Yes, when snow evaporates it is called sublimation. Sublimation can occur on days with lots of sun and low humidity. The snow, does NOT melt. The snow evaporates.
All of the suspended solids will settle on the lake bed if it was a salt lake you would have a layer of salt
The water has evaporated and left behind the solid residue of the sweet material, resulting in the green solid. This process is called evaporation and leaves the solid substance behind as the water in the liquid evaporates.
Halite is rock salt. Even some fresh water lakes have Na+ and Cl- dissolved in them, so I would guess that yes, some halite forms. But probably not all that much compared to a salt lake evaporating.
No. When water is evaporated into the atmosphere, the salt isn't evaporated with it. The water in the water cycle is always fresh water, and when it drains into the oceans it dimply diludes the ocean from having such a high salt content. The water cycle is always continuous and if it ended, we would all die.
The volume of water decrease.
One hypothesis will have to do with the surface tension of water.
No. A hypothesis would be "As the gradient of salt in the water increases the freezing point would decrease"
The "hypothesis" would be a statement of what you were trying to discover or prove.
I would say: Yes.
boil some water and you would be produce water vapour or water gas as it evaporates
mars has liquid water on it
mars has liquid water on it
If the water was pure and had no salt already mixed in it then the same 20 grams of salt would be left, as salt doesn't evaporates on the temperature at which water does evaporates.
I suppose that the chemical analysys of the condensed water can offer information.
No. A hypothesis is is merely a possible explanation for something based on an observation or idea, such as noticing a pool of fresh water that is frozen in 30 degree weather, but nearby there is another pool of salt water that is not frozen. A hypothesis for this would be that the salt in the water would keep it from freezing versus the fresh water.
A good hypothesis for glow in the dark water could be: "If a luminescent material is added to water, then the water will glow in the dark due to the light emitted by the luminescent material when exposed to darkness."