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Starch.
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∙ 16y ago
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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 did the leaf turn blue black when iodine was added in the starch test?
because photosynthesis has occured in the leaf. starch is produced and turns iodine blue-black indicating the presence of starch.
What happens to bread when you put iodine on it?
When you pore iodine on a piece of bread, the bread will turn black. Why? Because, the iodine has a chemical reaction with the starch in the bread. This method is great to find out if a food contains starch (I suggest a potato to try next!).
What happens when Iodine is added to cooked rice?
ok, the rice will turn black when you put with iodine. It just like burning, but it is faster then fire!
What color is starch with iodine solution?
it is a yellowish/orange colour but when iodine is present, than it will turn an dark-blue/black colour
Is there a spot test to identify the Polyvinyl Alcohol?
Iodine will turn PVOH blue/black. You can use tincture of iodine or Betadyne (or one of its knock offs)
Why do the cell walls of onions turn blue-black when put with iodine?
There is starch present within the onion cell which causes the black-blue color reaction when introduced to iodine.
What color does iodine turn in starch?
Black
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 powdered sugar turn black in iodine?
it does not turn blue when mixed with iodine. I don't think there is a colour change.
If stained with iodine what color will a banana turn?
BlackAns2:It is very unlikely that a ripe banana will have enough starch to turn iodine black. When iodine turns black, it is a positive test for the presence of starch.
When does iodine turn black when rice is added to iodine or iodine is added to rice?
Because Doritos taste good.
What would you say about a subtance if it did not turn blue-black with iodine?
If a substance didn't turn blue or black with iodine, it means that it didn't form any complex with iodine. When iodine forms a complex with the substance, the complex is generally blue in color.
What color does starch turn under iodine?
Black
What color does iodine turn a onion?
blue
What color does iodine turn in the presence of startch?
blue/black
What turns blue black when stained with iodine?
Starches turn blue-black when stained with iodine (which usually stains things a reddish-brown or amber color).Iodine turns blue black when starch is present
