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This is a classic Biology experiment known as the "Iodine Test".
Basically, by adding iodine (in the form of potassium iodide, KI) to something we can tell whether that something contains starch or not.
If it turns dark blue (it's a very striking and obvious change, actually) then starch is present.
So if there's no reaction, the food contains no starch. Coincidentally, it contains no Glycogen, either (as that would produce a brownish colour, albeit not the goal of the test).
When doing this test, it's important to mulch up the food so any starches hidden on the inside (like in vegetable cells) is well exposed to give a perfectly reliable result.
What else can I help you with?
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 is the effect of iodine on saturated fats?
Iodine can be used to detect the presence of unsaturation in fats. When added to a sample of saturated fat, there will be no change in color as iodine does not react with the double bonds present in unsaturated fats.
Can rubidium react with iodine?
Yes. Rubidium is an alkali metal in the sodium group. It will react with iodine to form rubidium iodide:- 2Rb+ I2 -> 2RbI
How does iodine react with acid?
Iodine does not directly react with acids. However, when iodine is added to an acid solution, it can form hypoiodous acid (HOI) which is a weak acid. This reaction can be used in analytical chemistry to detect the presence of iodine.
Does iodine react in hydrochloric acid solution?
Iodine will will not react with hydroelectric acid
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 is the effect of iodine on saturated fats?
Iodine can be used to detect the presence of unsaturation in fats. When added to a sample of saturated fat, there will be no change in color as iodine does not react with the double bonds present in unsaturated fats.
Do iodine and lithium bromide react?
Iodine and lithium bromide do not react with each other. However, iodine can form a complex with lithium ions in a solution containing lithium bromide.
Can rubidium react with iodine?
Yes. Rubidium is an alkali metal in the sodium group. It will react with iodine to form rubidium iodide:- 2Rb+ I2 -> 2RbI
How does iodine react with acid?
Iodine does not directly react with acids. However, when iodine is added to an acid solution, it can form hypoiodous acid (HOI) which is a weak acid. This reaction can be used in analytical chemistry to detect the presence of iodine.
How does iodine react with baby powder?
Iodine does not react with baby powder. Baby powder is usually made of talc or cornstarch, which are inert substances and do not participate in chemical reactions with iodine.
Does iodine react in hydrochloric acid solution?
Iodine will will not react with hydroelectric acid
Does Sodium Iodide react with Iodine?
Yes
What parts of a leaf does not react to iodine?
The waxy cuticle and the upper epidermis of a leaf do not react to iodine because iodine cannot penetrate these barriers to reach the underlying starch-containing cells.
How does iodine react with disaccharides?
Iodine can form a complex with starch molecules in a reaction called the iodine test, where the starch-iodine complex turns blue-black in color. Disaccharides, such as sucrose and lactose, do not typically react with iodine in the same way as starch due to their different chemical structures.
Does iodine react to iodine?
Iodine does not react with itself under normal conditions because it is a non-metal element that exists naturally as diatomic molecules (I2). However, it can react with other substances to form compounds.
Does iodine react with cellulose?
Iodine can react with cellulose through a process called iodination. When cellulose is treated with iodine, the iodine molecules can attach to the hydroxyl groups on the cellulose chains. This reaction can be used in chemistry to modify cellulose and produce different types of cellulose derivatives.
