When performing a scientific investigation on an unknown substance, the indicator can help you determine if the substance is a starch when the indicator changes the color of the substance. That is option B.
<h3>What are indicators?</h3>
An indicator is a chemical compound that is capable of changing its colour when added to a solution due to the acidity or basic characteristics of the medium.
When investigating an unknown substance that is suspected to be starch, the indicator that is usually used is iodine.
Upon the addition of iodine to a starch solution, it changes the medium into a blue-black color.
Therefore, when performing a scientific investigation on an unknown substance, the indicator can help you determine if the substance is a starch when the indicator changes the color of the substance.
Learn more about starch here:
brainly.com/question/1237142
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