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Starch turns blue when Iodine is introduced.
Added:
Though it's not quite a chemical reaction, Iodine will give starch a bluish purple color but it stays chemically UNchanged. Iodine stays reddish brown with glucose and many other oligosaccharides (up till about 10 to 15 monomeric glucose units)
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∙ 14y ago
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Is there a method for detecting starch without using iodine?
if you put iodine in food and it contains starch it should change color.
Why does iodine react with sugar?
Iodine does not react with sugar, it reacts with starch.
What food doesn't react with iodine?
It's very likely that Iodine will react with plant products, since Iodine reacts with starch. Negative controls (glucose, water, and protein) could be used to verify the result.
What reacts with iodine to produce a blue-black color?
starch
Is bread iodine solution a physical or chemical change?
Chemical- Iodine reacts with the starch of the bread.
Is there a method for detecting starch without using iodine?
if you put iodine in food and it contains starch it should change color.
Why do green leaves turn blue black when iodine is added?
because the leaves have photosynthesized- glucose is produced. therefore, the excess glucose is converted to starch. The starch is then stored in the leaf-starch is what causes the "green" leaf to turn blue black, as iodine turns blue-black when it reacts with starch.:P
Why does iodine react with sugar?
Iodine does not react with sugar, it reacts with starch.
What is the organic compound that reacts when iodine is added to starch solution?
starch
What does iodine detect?
The iodine test is used to test for starch. It reacts with starch to produce a purple blackish color.
What food doesn't react with iodine?
It's very likely that Iodine will react with plant products, since Iodine reacts with starch. Negative controls (glucose, water, and protein) could be used to verify the result.
When starch reacts with iodine what color appears?
purple
Is it tru that iodine reacts with starch to give a red color?
No when you but iodine with sarch for example a potato the starch reacrs with the iodine and it turns black
What color gives if starch reacts with iodine?
When iodine reacts with starch, the solution will turn a brownish colour.
What chemical detects glucose?
Iodine can detect starch, which is a polymer of glucose
What reacts with iodine to produce a blue-black color?
starch
Is glucose expected to have a positive iodine test?
No, Starch is
