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 dark blue or black color. Therefore, the correct answer is:
C. the presence of starch
A scientist adds iodine as an indicator to an unknow substance. What will this indicator reveal about the substance?
A. the presence of baking powder
B. the presence of glucose
C. the presence of starch
D. the presence of lipids of fat
1 answer