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Starch
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∙ 14y ago
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Why would a negative iodine test for starch indicate a positive result for the enzymatic degradation of starch by amylase?
Perhaps the iodine solution was old and gave a false negative.
What does iodine solution indicate?
Indicates that there is starch in the solution. One can be sure if the solution changes to a dark-purplish color.
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 is the difference between iodine crystals and iodine solution?
Iodine crystal is solid Iodine. Iodine solution is when Iodine crystals are dissolved in water.
What is a solute in tincture of iodine?
The solute in tincture of iodine is iodine.
Which biological molecule is iodine used to indicate?
STARCH
What chemical can be used to indicate the presence of starch?
The fat titties that I have that boys in my school stare at indicate the boners to the boys with smelly cocks.
What do the result of the iodine test indicate about the composition of the endosperm?
The iodine test will detect the presence of starch in the endosperm.
Why was iodine used to indicate starch?
Iodine (in fact the ion triiodide - I-3 - form with starch a very colored complex; the reaction is specific and sensible.
Which colour indicate a negetive test when starch is absent?
If you're using iodine, a negative test will be the color of the iodine solution, which should be a brownish color.
Why would a negative iodine test for starch indicate a positive result for the enzymatic degradation of starch by amylase?
Perhaps the iodine solution was old and gave a false negative.
What is idodine stain?
It is either iodine and it stains starch, or the other way around, starch that stains iodine, likely the former as it is biological. Starch or iodine can be used in chemical titrations also to indicate the presence of the other available in solution.
What color does the indicator turn when starch is present?
Iodine is used to indicate whether starch is present in a solution. If starch IS present, the indicator will turn dark blue/black. Iodine is used to indicate whether starch is present in a solution. If starch IS present, the indicator will turn dark blue/black. FOR WHAT PURPOSE WE USE STARCH-IODINE INDICATOR PAPER
How can you tell by using iodine if a sugar is a monosaccharide disaccharide or polysaccharide?
Adding iodine to the solution will turn it a deep blue which indicate presence of polysaccharides.
What does iodine solution indicate?
Indicates that there is starch in the solution. One can be sure if the solution changes to a dark-purplish color.
For what purpose you use starch-iodine indicator paper?
it is used to indicate acidic radicals which reacts with the iodide solution.
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!).
