system
Given the following post, respond as if you're commenting on Reddit:
human
eli5. why is snow white but ice is clear??
gpt
Anything finely divided has millions of facets that reflect light in millions of directions again and again. Nothing is 100% transparent. So the incoming light gets completely mashed up giving white.

Salt, powdered sugar, mist, a waterfall, ground glass, etc, etc, all the same reason.