Iodine is commonly used as an indicator for the presence of starch. When iodine is added to a substance that contains starch, it will turn a deep blue or purple color, indicating that starch is present. If there is no starch in the substance, the iodine will remain a brownish-yellow color. Thus, the addition of iodine will reveal whether or not the unknown substance contains starch.
A scientist adds iodine as an indicator to an unknown substance. What will this indicator reveal about the substance?(1 point)
1 answer