So that you can see the cells in the potato if your talking in Science terms
When iodine is placed in potato juice it turns dark purple to black. It's the starch in potatoes that reacts with the iodine.
If you add iodine to a potato, the iodine will react with the starch present in the potato. This reaction will result in a color change, turning the potato a blue-black color where starch is present. This can be used as a test to detect the presence of starch in foods.
This is evidence of the presence of starch in the potato or corn. Iodine reacts with starch, forming a dark blue to black color, which can be a qualitative test for the presence of starch in food or other materials.
If the iodine on/in the potato turns dark blue/purple/black, it means the iodine has reacted to the starch in the potato and has changed color.
Use concentrated Iodine, If parts of the potato turn blue-black, there is starch present.=Be careful - iodine is an irritant.==OBVIOUSLY, Don't eat the potato afterwards!=
The iodine solution will turn dark blue or black in the presence of starch in the potato slice. This is because iodine reacts with starch, forming a blue-black complex. It's a common test for the presence of starch in foods.
The potato will turn blue, purple, or black as the iodine reacts to the starch in the potato.
Starch is found in potato juice.
-What is the principle reason for the iodine test?Answer:-This test is used to test for starch prenest in a given solution orIodine test is a test used to determine the presence of starch in a particular substance.A positive result will yield the purple-black color.For example, adding a few drops of iodine solution to potato will seem purple-black color in this solution --->This means that the potato contains starch.by:Abdullah nasser Al-naffar
Potato juice is boss and whoever thought of this question is a genius.
potato juice
No when you but iodine with sarch for example a potato the starch reacrs with the iodine and it turns black