To test if a solution is iodine, add a few drops of starch solution. If the solution turns blue-black, iodine is present, as iodine forms a blue-black complex with starch.
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The iodine turned blue-black on the saree because it likely contained starch, which reacts with iodine. The socks, however, may not have starch, so the iodine did not change color.
Medu should incorporate more fiber-rich foods like fruits, vegetables, and whole grains into his diet to alleviate constipation and stomach aches. Reducing processed foods and increasing water intake will also help improve digestion.
Delicious foods like chocolate and fries often lack essential nutrients, while nutritious options like kale or quinoa might not always appeal to the taste buds. Balancing enjoyment with nutrition is key for mindful eating.
Ravi could ask his teacher, “How can specific foods act as medicine in our bodies?” and “Can you provide examples of foods that help prevent or treat specific health conditions?”