iodine is an indicator for starch, potatoes are basically starch storage organs for potato plants. that's why they are good to eat, mmm starch!
a whitish colour, has a bit of a green tint, or a pink tint, depending on the circumstances.
The starch in the potato would react with the iodine, causing it to take a blue-black colour.
the potato will go a black colour because of the starch inside of it
due to the presence of starch.
Dark red
Iodine is used to find starch. If no starch is present, a rusty brown color will appear. If starch is present like in bread and potato, the iodine when put on will turn blackish blue. That is known as a chemical reaction. Since there is no starch in water, the iodine in the water stays the same color as it started (brown). Hope that helps!! :)
blue
dark blue - purple
The color remain red because vinegar is an acidic solution.
Pigments are added to the paint. Pigments are added to the paint. Pigments are added to the paint.
iodine solution
Yellowish brown.
A deep blue colour
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)
the iodine is reacting with the starch.
the color of the leaf become brown-black after the iodine solution was added.
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.
their color
the color of the potato will become dark blue
Petrol changes color when mixed with iodine solution due to covalent bonding.
Lugol's solution is a solution of iodine (1-5%) and potassium iodide in water. So the solution should have the pale color of iodine and the color should be pale (light) brown.
-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