A scientist adds iodine as an indicator to an unknown substance. What will this indicator reveal about the substance?(1 point) Responses the presence of baking powder the presence of baking powder the presence of glucose the presence of glucose the presence of starch the presence of starch the presence of lipids or fat
The indicator iodine will reveal the presence of starch in the substance.
The iodine indicator can reveal the presence of starch in the unknown substance.
The iodine indicator is commonly used in scientific experiments to determine the presence of certain compounds in a substance. In the case of your question, the indicator will reveal the presence of starch.
Here is how you can understand this:
1. Iodine reacts with starch molecules in a specific way, resulting in a color change. When iodine comes into contact with starch, it forms a blue-black complex or color. Therefore, if the substance being tested contains starch, the indicator will reveal this by producing a blue-black color.
2. On the other hand, if the substance being tested does not contain starch, there will be no reaction between iodine and the compound, and the indicator will remain its original color (typically brown or yellowish).
It's important to note that the iodine indicator is specific for detecting starch and won't provide information about other compounds like baking powder, glucose, or lipids. Different indicators or tests would be needed to determine the presence of these substances.