Iodine will color the hydrated starch to very dark purple black
They are homogeneous. But they are not a mixture, so they are a pure substance
Nothing special happens and no reaction occurs. Iodine is hardly soluble in water.
When iodine is mixed with water, it initially forms a solution with a characteristic brown color. Over time, the iodine will partially dissolve in the water, resulting in a mixture of iodine molecules and water molecules. This forms an iodine solution, which can then be used for various applications such as testing for starch presence.
When iodine is added to water, it forms a solution where the iodine molecules dissociate, producing a characteristic brown color. This color is due to the interaction of iodine molecules with water molecules.
No, iodine is not soluble in turpentine. Turpentine is a non-polar solvent, while iodine is a polar substance. To dissolve iodine, a polar solvent like alcohol or water is needed.
Starch
Because iodine is nonpolar, a nonpolar substance like ethanol would dissolve it. Iodine is insoluble in polar substances like water.
When you evaporate an aqueous iodine solution, the water will gradually evaporate and the iodine will be left behind as solid crystals. Iodine is not soluble in water, so it will separate out as it becomes less diluted with the evaporation of water.
they dissolve but water will become saturated that's why the remaining Iodine crystals will remain suspended.
I am not quite sure what happens when corn starch and iodine are mixed but when corn starch, iodine and water are mixed, it creates a purple solution. The darkness of the colour mostly depends on the iodine. Without the starch with iodine and water, it is deep yellow or brown.
When iodine crystals are placed in water, they slowly dissolve to form an iodine solution. This solution will have a characteristic brown color, indicating the presence of iodine. Iodine is sparingly soluble in water, so the reaction may take some time to reach equilibrium.
Bromine water turns dichloromethane to a violet color.