In each trial, you will add an indicator to the mystery food sample. But you will also add the indicator to a known substance and water. Why is that important? Check all reasons. to practice measuring volume using the graduated pipette correctly to match the mystery food sample to a definite positive result (gelatin, oil, etc.) to match the mystery food sample to a definite negative result (water) to increase the amount of data.

Question

Kaylah Cunningham

Biology

29 November, 16:13

In each trial, you will add an indicator to the mystery food sample. But you will also add the indicator to a known substance and water. Why is that important? Check all reasons. to practice measuring volume using the graduated pipette correctly to match the mystery food sample to a definite positive result (gelatin, oil, etc.) to match the mystery food sample to a definite negative result (water) to increase the amount of data.

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Answers (2)

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Troy Bartlett · Answer 1

To match the mystery food sample to a definite positive result (gelatin, oil, etc.)

Kara · Answer 2

When we experiment we most always have a controlled variable that we can then compare to our variable that is being tested. Without more detail I can hardly elaborate, although it seems like you are using some indicator to identify a substance?