Tag: Iodine indicator

The iodine-starch test, first discovered in 1814, is one of the most classic and visually striking chemical experiments in analytical chemistry. This test relies on a specific indicator to produce its famous color change, providing a precise signal for the presence of iodine in a solution.

An iodine solution, normally a yellowish-brown color, is a classic indicator used to test for the presence of starch. When this solution is dropped onto a potato, a dramatic and unmistakable chemical reaction occurs, resulting in a dark and vibrant color change.