Iodine crystals are a pure substance.
Iodine is a chemical element; not a mixture, not a compound.
Iodine is an element, so a pure substance, not a mixture, (so even not homogeneous).
They are homogeneous. But they are not a mixture, so they are a pure substance
Iodine is an element, so a pure substance, not a mixture, (so even not homogeneous).
Solid iodine can be found as pure crystals.
Solid iodine can be found as pure crystals.
To separate salt and iodine, you can use sublimation. The iodine will sublimate at room temperature, leaving the salt behind. To purify the iodine further, you can re-sublimate it by heating it gently and collecting the vapor to form pure iodine crystals.
Well every school kid knows about the 'cold finger' separation technique. Iodine changes from a solid straight to a gas when heated. It sublimes. So heat the sand/iodine mixture in a pyrex tube or flask which has a 'cold finger' inserted. The hot iodine gas will rise, hit the cold finger and form pure solid iodine crystals on the cold finger. Collect from the finger. This really is bog standard school kid chemistry.
Yes, it is heterogenous.
Iodine is soluble in carbon tetrachloride.
To make a pure sample of iodine, you can start with a mixture containing iodine and other substances, then use a process like sublimation to separate the iodine from the other components. Sublimation involves heating the mixture to allow the iodine to vaporize and then cooling it to condense the iodine back into solid form. This process helps to obtain a pure sample of iodine.
Orange drink made from crystals is considered a mixture. The crystals are likely a combination of various ingredients such as sugar, artificial flavoring, and colorants. When mixed with water, these components dissolve and form a homogeneous mixture, rather than a pure substance with a consistent chemical composition.