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 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.%0D%0AThe test was inconclusive because the student forgot to add heat.%0D%0A%0D%0AThe substance is glucose based.

1 answer

Based on the information provided, if the student performed a Benedict's test and observed no color change after adding the reagent, the most reasonable conclusion is:

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

The Benedict's test typically requires heating to facilitate the reaction that leads to a color change if reducing sugars (like glucose) are present. Therefore, if nothing happened, it might be due to the lack of heat rather than the absence of glucose.