Which of the solutions you tested acted as the negative control? Why is it neces

Question

Which of the solutions you tested acted as the negative control? Why is it necessary to have positive and negative controls in an experiment? What does the Benedict's solution test for? Why were both Benedict's solution and testing strips used for the same group of test tubes? You are presented with two unknown solutions. You know that one contains starch and another contains a mixture of starch and glucose. Could you use just the iodine reaction to distinguish them? Why or why not? Given the situation in question 3, could you use Benedict's solution to distinguish the two solutions? Why or why not? Which of the reagents needs to be heated in order to determine a result? In your own words, explain what happens (molecularly) when it is heated.

Explanation / Answer

Distilled water or simply Water is very commonly used as a Negative control because it's Purified.It has no contaminations.We need Controls in an experiment to know what the anticipated result of the Experiment would be.Water being absolutely inert and neutral has no considerable effect on the Experiment.

Negative and positive controls in an experiment is used to eliminate Confounding variables which simply means that when we expect a Positive result we get it and when we expect a Negative result we get it.

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