Question

I'd love some help!

In each trial, add an indicator to the mystery food sample. But also add the indicator to a known substance and water. Why is that important? Check all reasons.

A. To practice measuring volume using the graduated pipette correctly.

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

C. To match the mystery food sample to a definite negative result (water).

D. To increase the amount of data.

The test above shows_______test for the mystery food sample.
what is the blank?
A.Positive?
B.Negitave?
C.Iconclusive?

Thanks!!!!

Answer 1

the first person is right !!

Step-by-step explanation:

i did what they said to and i got it correct !!

Answer 2

For the first question, the reasons should be:

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

C. to match the mystery food sample to a definite negative result (water)

For the second fill-in- the blank:

The test above shows B. negative for the mystery food sample.