I think it makes a "chemical reaction"
Lugols: tests for starch Clinitest- Glucose
Clinitest tablets are anhydrous Benedict's reagent. When a tablet is added to a solution of glucose, a brick-red precipitate of copper (I) oxide is produced. Clinitest tablets are sold to monitor the levels of glucose in the urine of diabetics.
Starch has high affinity for Iodine and in presence of iodine crystals starch turns blue from being colourless. This the fundamental that is used for chemically identifying the starch.
Iodine salts haven't starch.
Starch is not the indicator. Iodine is the indicator of starch.
if you put iodine in food and it contains starch it should change color.
Starch can give a negative iodine test when starch is mixed with iodine in water. The iodine gets stuck in the coils of beta amylase molecules and the starch forces the iodine atoms into a linear arrangement in the central groove of the coil.
Starch is not present. Iodine is an indicator for starch.
I am not quite sure what happens when corn starch and iodine are mixed but when corn starch, iodine and water are mixed, it creates a purple solution. The darkness of the colour mostly depends on the iodine. Without the starch with iodine and water, it is deep yellow or brown.
NoIodine Stains starch.
There is a dark blue colour when iodine is added to starch instead of a yellow sort of colour when iodine is added to a substance without starch.
Yes. "Potassium Iodine" tablets is a colloquial - and incorrect - way of saying "Potassium Iodide" tablets.