When the snow melts, where does the white go?
The white is merely light reflected in a particular way from the structure of the snow. If the structure changes, the reflections also change.
You gonna listen to a guy named Exapno Mapcase?
The white evaporates and condenses into clouds. That’s why clouds are white. Dark clouds come from dirty snow.
Never look up when a yellow cloud is raining.
Along the same lines … polar bear hair is really transparent.
Is there anything other than an incandescent bulb that is really white rather than transparent with scattering?
a mirror showing an incandescent bulb.
What! its not scattering! 
Also, why is snow white when ice is clear?
Also, why is graphite black when diamonds are clear?
Though snow, ice and water are the same material composition wise, they differ structure wise. Ice is one large crystal (usually with some deformations and air pockets) where as snow is composed of several tiny crystals bunched together.
Single crystals of ice let light through at most angles with a little refraction. But when you have several crystals bunched together, light gets twisted and turns in each crystal differently and is often sent back towards the source in a phenomenon is known as scattering or diffuse reflection which gives snow its white color.
Melted snow or water behaves very similar to a single ice crystal, letting light through, thus becoming transparent or clear.
FISHLIPSJ: Now, apply what you have learned and answer this:
*Why do clothes look darker when wet? *
*And where does the dark color go when the clothes dry? *