It is a compound, and compounds are types of homogeneous matter. Iodine crystals are composed entirely of I2 and as such are the same (homo) throughout (geneous).
They are homogeneous. But they are not a mixture, so they are a pure substance
Iodine crystal is solid Iodine. Iodine solution is when Iodine crystals are dissolved in water.
Iodine crystals are a pure substance.
Iodine crystals are very poor conductors of heat and electricity
heterogeneous
The mixture of salt and sugar crystals is heterogeneous.
Sports drink crystals are heterogeneous because you can see that it is made of many different parts.
You think probably to sublimation of iodine.
By heating it at low temperatures.
Iodine c:
Iodine crystals
Solid iodine can be found as pure crystals.