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It is also iodine, as a gas.

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14y ago

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What do you call the purple gas that fills the test tube when a few crystals of iodine is being heated inside a test tube?

The purple gas that forms when heating iodine crystals is called iodine vapor.


What do you call the purple gas that fills the test tube when a few crystal of iodine is being heated inside a test tube?

This is also iodine, as a gas.


What is observed when iodine is heated in a test tube?

When iodine is heated in a test tube, it sublimates, transitioning directly from a solid to a purple vapor without passing through a liquid phase. This vapor can condense back into solid iodine upon cooling, forming purple crystalline deposits on the cooler parts of the test tube. The characteristic purple color and pungent odor of iodine vapors are also noticeable during the heating process.


Explain why the iodine test gave such results upon prolonged heating?

explain why the iodine test gave such results upon prolonged heating


What does iodine detect?

The iodine test is used to test for starch. It reacts with starch to produce a purple blackish color.


When you warm the test tube crystal of iodine what is the result?

it result to the formation of metal sulfates


What stain is used to test for plant starch in cells?

aqueous iodine in the form of potassium iodide turns purple in the presence of starches in water.


What is shiny black solid but gives off a purple vapor when heated.?

You think to iodine.


What turns purple in the presence of starch?

Iodine turns purple in the presence of starch. This is a common chemical test used to detect the presence of starch in substances like food or plants. When iodine comes into contact with starch, it forms a complex that appears purple in color.


What is the principles of iodine test?

-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


How would you test for the presences of starch?

put a few drops of iodine on the subject, if it turns purple theres starch.


How will you determine whether iodine entered the dialysis bag containing starch?

You can determine if iodine entered the dialysis bag containing starch by performing a simple iodine test. Add a few drops of iodine solution to the bag. If the iodine turns blue or purple, it means that iodine has entered the bag and reacted with the starch inside.