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) 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 needed to also test with iodine or vinegar. The test was inconclusive because the student needed to also test with iodine or vinegar. The test was inconclusive because the student forgot to add heat.

Answer 1

The most accurate conclusion the student can make is that "The test was inconclusive because the student forgot to add heat." The Benedict's test requires heating the mixture to facilitate the reaction between the reducing sugars (like glucose) and the Benedict's reagent, which leads to a color change if reducing sugars are present. If there was no color change, it could be due to the lack of heat, making it impossible to determine whether the substance is glucose-based or not based solely on the reaction observed.