Practice Quiz

SAT Biology Subject Test Practice Questions

Category - Biology

Start a Study Session Sign up for Question of the Day
What color would the pigment be after tap water is added to it?

Here is the table again for reference:

pH 1-2 Pink/Acid
pH 3-4 Dark Red/Acid
pH 5-6 Violet/Acid
pH 7-8 Blue/Neutral-Base
pH 9-10 Blue-Green/Base
pH 11-12 Green-Yellow/Base
  1. Pink
  2. Dark red
  3. Violet
  4. Blue
  5. Greenish-yellow
Explanation
Answer: D, blue. Adding tap water will result in a blue color.

Key Takeaway: The pigment is blue when it is at a neutral of slightly basic pH. Tap water has a pH or around 7, indicating it is a neutral substance. Therefore, adding tap water to the pigment will result in a blue color.
Previous Next
Was this helpful? Upvote!
Login to contribute your own answer or details
Start a Study Session Sign up for Question of the Day

Top questions

Related questions

Most popular on PracticeQuiz