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Iodine indicates the presence of starch in a solution by altering the energy level spacing in the amylose component of starch, creating an intense blue color. This energy change allows amylose to absorb visible light.


Starch when mixed with Iodine turns a deep shade of blue because starch contains amylose. Amylose is a soluble component of starch as well as other carbohydrates.


Iodine stains starch because of the chemical reaction between it and the polysaccharides in starch molecules. This reaction turns the starch a deep blue hue. This phenomenon is called Lugol's reaction for starch. Iodine is useful in laboratories and medical offices because it also reacts with many o


When iodine and starch interact, iodine molecules become arranged within the starch molecules in a linear fashion. The visible end result of this arrangement is the appearance of a blue-black coloration.


Iodine reacts with starch in water to produce an intensely blue color. Beta amylose, which is a form of soluble starch, traps iodine ions within its highly coiled structure to achieve this effect.


Starch has the largest molecule out of all of starch, iodine and water. This is because it is composed of numerous units of glucose, so it's technically a polymer.


According to WebMD, iodine is commonly used to prevent iodine deficiency and disinfect wounds. It can also be used to protect against radiation, treat ulcers and purify water.


Iodine is an element and, therefore, it is not strictly "made" of anything but iodine atoms, according to Jefferson Lab. Iodine is a solid at room temperature and occupies position 53 on the periodic table. It is classed as a member of the halogen group.


Foods that are high in iodine include seafood such as sea vegetables, oysters, shrimp and finfish, as well as salt that's fortified with iodine. Dairy products such as milk, yogurt and cheese also have some iodine, and it's commonly found in plants that have been grown in iodine-rich soil. Iodine is


Oceans are one of the world's greatest sources of iodine. Iodine can also be found in other salty waters, such as brines found near oil deposits. China, Japan, Russia and Chile are some of the top global producers of iodine.