0
I did this experiment at my middle school and any food that turns blue has carbohydrates in it. Ifi t doesn't change colour then it has no carbohydrates.
Wiki User
∙ 13y ago
Wiki User
∙ 10y agobecuase the iodine is lol
Add your answer:
Earn +20 pts
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 happens when iodine is added to carrot?
The colour of the iodine will turn from yellowish brown to dark blue
Does sugar turn blue when mixed with iodine?
No it turns purple.
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.
Why did the leaf turn blue black when iodine was added in the starch test?
because photosynthesis has occured in the leaf. starch is produced and turns iodine blue-black indicating the presence of starch.
Does iodine turn blue?
Iodine turns blue in the presence of starch
What would you say about a subtance if it did not turn blue-black with iodine?
If a substance didn't turn blue or black with iodine, it means that it didn't form any complex with iodine. When iodine forms a complex with the substance, the complex is generally blue in color.
Why does powdered sugar turn black in iodine?
it does not turn blue when mixed with iodine. I don't think there is a colour change.
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 color does iodine turn a onion?
blue
When iodine solution is mixed with an unknown sample of food the mixture turn blue black this color change indicates the presence of?
An enzyme.
What happens when iodine is added to carrot?
The colour of the iodine will turn from yellowish brown to dark blue
Does sugar turn blue when mixed with iodine?
No it turns purple.
What color does iodine turn in the presence of startch?
blue/black
What color is iodine on litmus paper?
The water solution of iodine turn blue litmus paper to red.
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 turns blue black when stained with iodine?
Starches turn blue-black when stained with iodine (which usually stains things a reddish-brown or amber color).Iodine turns blue black when starch is present
