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)

Question

Responses

The substance is not glucose based.
The substance is not glucose based.

The substance is glucose based.
The substance is glucose based.

The test was inconclusive because the student forgot to add heat.
The test was inconclusive because the student forgot to add heat.

The test was inconclusive because the student needed to also test with iodine or vinegar

Answer 1

The correct conclusion the student can make is:

The test was inconclusive because the student forgot to add heat.

Benedict's test requires heating the mixture to facilitate a color change if reducing sugars (like glucose) are present. If the reagent was added but nothing happened, it could be due to the lack of heat.