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)%0D%0AResponses%0D%0A%0D%0AThe substance is glucose based.%0D%0AThe substance is glucose based.%0D%0A%0D%0AThe substance is not glucose based.%0D%0AThe substance is not glucose based.%0D%0A%0D%0AThe test was inconclusive because the student needed to also test with iodine or vinegar.%0D%0AThe test was inconclusive because the student needed to also test with iodine or vinegar.%0D%0A%0D%0AThe test was inconclusive because the student forgot to add heat.

Answer 1

The correct conclusion the student can make is:

The substance is not glucose based.

In a Benedict's test, a color change indicates the presence of reducing sugars, such as glucose. If there is no color change after adding the Benedict's reagent, it suggests that the unknown substance does not contain reducing sugars like glucose. However, it is also important to note that other factors, such as the need for heat, can affect the outcome, but the direct observation here leads more strongly to the conclusion that the substance is not glucose based.