Sodium is a greyish white solid.
Sodium Phosphate just looks like plain ol' table salt.
Sodium is a metal, very reactive, with a silvery-white appearance.
Because it doesn't look like a metal, and it doesn't look like a metal because it isn't a metal it is a condiment which happens to be a sodium salt.
A shiny silvery white metal.
They may. Vampires look however the author of the story in which the appear choose to make them look. Being fully fictional characters, they can appear in anyway.
Sodium thiopental is a white crystalline powder that is water-soluble. It is typically provided as a sterile powder for injection in vials.
Different bug bites can appear to look like a hickey. The reason for this is the reaction to the skin. If a person has an adverse reaction the skin will become irritated, red, and swollen and appear hickey like.
Quicklime is white and can be crushed into a powder or appear as stones
Lung fields will appear white
It is colourless but most of its samples appear yellowish.
salt
I assume that you really mean sodium iodide (NaI), as there is no compound called sodium iodine. NaI is a white crystalline solid.