Question
A scientist adds iodine as an indicator to an unknown substance. What will this indicator reveal about the substance?
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Answered by
GPT 3.5
Iodine is commonly used as an indicator for starch. When iodine is added to a substance that contains starch, it will react with the starch molecules and produce a dark blue-black color. Therefore, if the unknown substance contains starch, the iodine indicator will reveal this by turning dark blue-black. If the substance does not contain starch, there will be no color change when iodine is added.
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