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Q: What was the purpose of the starch test tube containing only water Explain.?
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What is the purpose of testing water for starch sugar and fat?

because I love u


Is starch dissolve in water and why?

Starch consist of two types of natural polymers.NamelyAmylopectinAmyloseAmylopectin is water soluble but Amylose is water insoluble.this is reason why starch don't dissolve in water


Does H2O contain starch?

No. Water contains nothing but water. It can contain starch if starch is added to it.


Explain Why a beaker containing sand and water is mixture although sand itself is a pure substance?

Because you mixed sand and water together in the beaker.


Add a drop of iodine to both a distilled water test tube and to the test tube containing the starch solution in the test tube What do you observe?

The starch solution will turn black, while the distilled water will remain brown, the same colour as the iodine. This is actually because water, normally used as a control, does not contain any starch and as we know, the iodine test is highly specific for the presence of starch hence no colour change other than iodine dissolving in water to form an iodine solution contrary to starch which we know complexes with iodine, to form starch-iodine complex forming the blue-black colour observed


What is the solubility of corn starch in water?

corn starch is insoluble in water. Cornstarch is not an element!


How do you dissolve starch in water?

Starch dissolves in boiling water. As a result, the most useful method is to boil water in a pan, and add starch, stirring until it is dissolved.


What is starch paste and starch gel?

Starch paste is nothing more or less than wheat flour soaked in water until the starch drips out. And starch gel is basically the same thing but less water is added so the starch will be thicker.


Why doesn't a plant produce as much starch in the absence of water as it does in the presence of water?

In order to produce starch, a plant has to combine water and the sugar it produces. Without water, a plant cannot produce starch.


Can you explain the purpose of emulsion?

Emulsion is combining oil with water. For instance, soap causes oils to bind with water, so soap is an emulsifier.


What happens when starch dissolves in water?

Starch cannot dissolve in cold water, however boiling water has sufficient enough energy to dissolve starch.


Explain why soluble starch does not conduct electricity?

Starch is an chain of sugar molecules, and the chain separates to its individual sugars when dissolved. Because sugars are made of C, H, and O, there are no metals and no ionic bonds in the molecule, so it does not conduct electricity when dissolved in water.