A student is performing a Benedict’s test on an unknown substance. The student adds the reagent (the chemical required to make a color change), and nothing happens. Which conclusion can the student make? (1 point)
The test was inconclusive because the student forgot to add heat. (selected)
The test was inconclusive because the student needed to also test with iodine or vinegar.
The substance is glucose based.
The substance is not glucose based.
1 answer
The correct conclusion the student can make is:
The substance is not glucose based.
Since the Benedict's test did not result in a color change, it indicates that the unknown substance does not contain reducing sugars like glucose. The first option is not valid because while heating is necessary for the test, the absence of color change directly suggests that there are no reducing sugars present, regardless of whether heat was applied or not.
1 answer
1 answer
1 answer
1 answer