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What effect does iodine have on starch?
it will turn the starch into blue black colour
What reacts with iodine to produce a blue-black color?
starch
What happen when starch add to iodine?
It turns blue-black
What is the colour of starch after iodine has been added?
The color of starch after iodine has been added is deep blue to black.
If iodine solution turns blue-black what substance is present?
Starch.
What observations do you need to expect if starch is present when testing leaf for starch?
It can be observed that when testing for starch their must be a olour change of blue black after iodine solution was added.Before the colour change was green that changed to blue black of the whole procedure is been carried out.
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.
Which white powder turns blue-black in iodine solution?
starch
What effect does iodine have on starch?
it will turn the starch into blue black colour
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
What is the positive color reaction starch is present?
Use an iodine solution. it should be orange to brown to begin with, if there is a starch present, it will turn blue-black.
What happens when iodine is added to a starch solution?
When iodine is added to starch it turns a blackish color due to a chemical reaction.
What indicates the presence of starch in the food samples?
blue-black color indicates the presence of starch
What reacts with iodine to produce a blue-black color?
starch
What is starch tested for?
Iodine solution turns blue/black
What happen when starch add to iodine?
It turns blue-black
What color does the indicator turn when starch is present?
Iodine is used to indicate whether starch is present in a solution. If starch IS present, the indicator will turn dark blue/black. Iodine is used to indicate whether starch is present in a solution. If starch IS present, the indicator will turn dark blue/black. FOR WHAT PURPOSE WE USE STARCH-IODINE INDICATOR PAPER
