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When iodine is mixed with saliva and bread crumbs, it turns purple due to the presence of starch in the bread. Iodine reacts with the starch molecules, forming a blue-black complex, which can appear purple depending on the concentration and lighting. Saliva contains enzymes that begin to break down starch into simpler sugars, but the iodine interaction is primarily with intact starch. This color change is a common test for the presence of starch.
What else can I help you with?
What happens when you add iodine crystal and chloroform?
iodine is soluble in CHCl3. Liquid become purple in color.
If iodine is added to cornstarch what colour is obtained?
Blue or Purple
After iodine is added to the slide what color do cells appear?
Cells will appear blue or purple after iodine is added to the slide. The iodine reacts with starch in the cells, resulting in a color change that helps to visualize the cellular structures.
Purple colored crystals that are added to water to kill germs?
Most likely crystals of Iodine. Iodine is known for its anti-bacterial properties.
What color does flour have when added with iodine?
When flour is added with iodine, the mixture usually turns a dark purple or black color due to the interaction between the starches in the flour and the iodine. This color change is commonly used as a test to detect the presence of starch in a substance.
What change is involved when iodine crystals are added with chloroform?
When iodine crystals are added to chloroform, the crystals dissolve, forming a purple solution due to the iodine atoms interacting with the chloroform molecules. This solution is commonly used as a reagent to test for the presence of double bonds in organic compounds.
How did bernard courtois discover iodine?
Bernard Courtois was extracting saltpetre from seaweed ashes and accidentally discovered iodine in 1811 when he accidentally added sulfuric acid to the mix and the resulting purple vapors condensed into solid crystals of iodine.
Why does glycogen change to red when iodine solution is added?
Iodine tests for complex sugars. Glycogen is a complex sugar and will change dark purple when iodine solution is added (color is irrelevant, all you really need to know is that the change to a specific color signifies a presence of a macro molecule)
What makes iodine turn purple?
when iodine is added to a substance it turns dark blue when starch is present, and remains brown when starch is not present. This is basically because iodine forms a polypeptide complex with starch, resulting in the dark blue solution.
What color would you see if iodine solution is added to starch?
The color change that occurs when iodine solution is added to starch is a dark blue or purple color. This reaction is commonly used to test for the presence of starch in a solution.
What is the reaction between iodine solution and ccl4?
When iodine solution is added to CCl4 (carbon tetrachloride), the iodine molecules dissolve in the CCl4 solvent because they are nonpolar molecules. This results in a solution with a distinct purple color due to the presence of iodine. However, there is no chemical reaction between the iodine and CCl4 in this case.
What happened when we put powdered sugar in iodine?
When powdered sugar is added to iodine, it forms a purple-black complex known as a starch-iodine complex. This reaction occurs because iodine reacts with the starch content in the powdered sugar, producing this distinct color change.
