It would form a white substance called anhydrous copper(II) Sulfate.
*Anhydrous - Salts that do not contain water.
Copper (II) sulfate pentahydrate is also called "blue vitriol," because it's, well, blue (vitriol is an old term for sulfuric acid). However, anhydrous copper (II) sulfate is white.
Crystals of sugar are obtained.
they do not form when heated! they form crystals when they are frozen bu a freezer or room tempreature.
The fumes given off when crystals of iodine are heated are purple in color.
When a mixture of sodium chloride and water is heated to dryness, the residue is sodium chloride, because the boiling point of sodium chloride is much higher than the boiling point of water.
Amethyst crystals are known to turn into purple vapour when they are heated. This phenomena is due to the presence of iron impurities in the crystal structure of amethyst that react to heat by creating the purple coloring.
When heated in an open flame the crystals are dehydrated and turn grayish-white. -www.wikipedia.com
It would be chemical.
first off DO NOT HEAT IODINE CRYSTALS because they create the same sort of fumes you would fine in a meth lab and it is possible that it can kill you because of its extremely toxic fumes and
If the sample is not heated to dryness, the reported value for total solids will be lower than the actual value. This is because the remaining moisture in the sample will contribute to the weight measured, erroneously inflating the value for total solids.
When ferrous sulphate crystals are heated, they lose water molecules and undergo dehydration, forming a white powder known as anhydrous ferrous sulphate. This process is also known as thermal decomposition.
Adding water to heated copper sulfate crystals is a chemical change. When water is added to heated copper sulfate crystals, the copper sulfate undergoes a chemical reaction where it dissolves in the water to form a solution. This is a chemical change because the chemical composition of the copper sulfate is altered during the process.
The residue obtained when crystals of ferrous sulphate are strongly heated is reddish-brown in color. This residue is a compound called ferric oxide or iron(III) oxide.