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When does iodine turn black when rice is added to iodine or iodine is added to rice?
Because Doritos taste good.
What do you call when iodine crystals turn to iodine haze?
You think probably to sublimation of iodine.
What happens when you put a leaf in boiling alcohol?
it turns green because the chlorophyll is evaporated out
Does iodine turn blue?
Iodine turns blue in the presence of starch
Does iodine turn into vapour on heating?
no
Why did each of the solutions turn iodine blueblack at the start of the experiments?
Iodine is famous for testing of the presence of starch. I would assume starch is present in the solution, therefore iodine would turn blue. Originally, the colour of iodine solution is brown.
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.
When does iodine turn black when rice is added to iodine or iodine is added to rice?
Because Doritos taste good.
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 does a sugar solution turn brown when Iodine is added?
Because Iodine is a brown element.
What happens when iodine is added to carrot?
The colour of the iodine will turn from yellowish brown to dark blue
Rahul picked up a dry leaf from the school garden and try doing iodine test he observed that the colour of iodine did not turn blue or black can you explain why?
because the leaf doesnot contain starch in it
What does the presence of blue color means in variegated leaf experiment of photosynthesis?
By blue color I assume you mean an added dye that shows how some parts of the leaf can photosynthesize and others not. The easiest of these experiments is to place the leaf in boiling ethanol (alcohol) and when drained of colour spread out on a flat surface. Soak the leaf in iodine and the green parts will turn blue/black and the non green parts will stay the yellowish brown colour of iodine. The green parts contain starch (a more compact form of glucose) which makes iodine turn blue/black. The blue/black is what will show starch is present.
Will a leaf exposed to sunlight turn purple after adding iodine?
Yes, it will become purple or blue by adding iodine due to the presence of starch in the cells.
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.
What is iodine used as an indicator for?
Iodine is used as an indicator for starch. When a substance has iodine added to it, then it will turn into a dark blue color. This is a sign that the substance indeed has starch in it.
What happens when iodine is added to rice?
ok, the rice will turn black when you put with iodine. It just like burning, but it is faster then fire!
