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Why do fallen Leaves not turn blue-black on being tested with iodine?
When the leaves fall down the supply of chlorophyll is stopped
Does iodine turn blue?
Iodine turns blue in the presence of starch
What color does iodine turn in the presence of startch?
blue/black
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
Does iodine turn blue with amylose?
Yes, it is true - it is a common test.
Why do green leaves turn blue-black when iodine is added?
because there is starch present
Why do fallen leaves not turn blue black on being tested with iodine?
When the leaves fall down the supply of chlorophyll is stopped
Why do fallen Leaves not turn blue-black on being tested with iodine?
When the leaves fall down the supply of chlorophyll is stopped
Why do green leaves turn blue black when iodine is added?
because the leaves have photosynthesized- glucose is produced. therefore, the excess glucose is converted to starch. The starch is then stored in the leaf-starch is what causes the "green" leaf to turn blue black, as iodine turns blue-black when it reacts with starch.:P
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 color does iodine turn a onion?
blue
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
