Iodine is a nonmetallic chemical element which is found in some minerals in the earth. Iodine is a critical nutriment for proper growth and metabolism. We can identify weather a substance contains iodine in it by using iodine antiseptic solution or by adding vinegar, hydrogen peroxide, and corn starch to identify weather or not iodine is present. In our experiment we did both, first we added iodine antiseptic to a cup of corn starch and water and the cloudy water turned black-ish/purple. Then we tested three different types of salt to see which one contained iodine. Out of cups A-C cup C was the only one to turn the same color as the first cup we tested indicating that it contained iodine. Iodine is important for a healthy diet, if someone doesn't have enough iodine in their diet it can cause severe physical and mental retardation, most third world countries suffer from malnourishment.
Great references to the lab and use of outside information.
ReplyDeleteI would like to see links to the sites from which you gain the valuable facts to support your statements.
Other than that, great work!