Simply put, no.
To make ice crystals in Alxemy, combine the elements of water and cold. Place the water element on the cold element to create ice crystals.
Iodine is a chemical element; not a mixture, not a compound.
phosphorous
No, urea crystals are not an element. Urea is a compound composed of carbon, nitrogen, oxygen, and hydrogen atoms.
The chemical element of atomic number 53, a non-metallic element forming black crystals and a violet vapour.
Salt is a more cubic element than sugar
Neither, coper sulfate is not a mixture and it is not an element. Coper Sulfate is a chemical compound.
Compound, crystal is not an element so obviously what it is made up of must be a compound <><><><> Crystals can be either an element (diamonds are carbon- and crystalline) or a compound (salt, sugar). Unsure of your meaning of "broken down".
Crystals can be elements (as diamond) or compounds (as sapphire).
Dark purple crystals could indicate the presence of elements such as manganese, iodine, or potassium in their compounds. The color of crystals is often determined by the electronic structure of the element and the way it absorbs and reflects light. Additional tests or analysis would be needed to determine the exact element present in the crystals.
Ca is a prominent element in hydroxyapatite crystals that is enamel.
Copper is known for creating salts with vibrant and crisp colors. Copper sulfate, for example, forms blue crystals, while copper chloride can produce green crystals.