The Truth About Indicators

15 Points Per Correct Answer - No time limit  

1. Litmus is a common indicator used to tell whether something is an acid or a base. If you dip a piece of blue litmus paper into an acid, what color will it turn? Yellow None, it will stay blue Red Purple

2. If you dip a piece of red litmus paper into an acid, what color will it turn? Blue Purple Yellow None, it will stay red

3. Phenolphthalein is another acid-base indicator. What is the abbreviation for this indicator? PLTL PHPH PHTH PPTN

4. If you were to drop some phenolphthalein into a base, what color would it turn? Red Purple-Pink Clear Yellow

5. Goldenrod paper comes as little strips, similar to litmus. If you were to dip a piece of goldenrod paper in a base, what color would it turn? Red Yellow Orange Green

6. Now on to universal indicator. What color would this turn in a very strong acid? Yellow Red Green Purple

7. What color would universal indicator turn if a substance was neutral? Green Red Yellow Blue

8. If you were to put some universal indicator in a very strong base, what color would it turn? Red Green Purple Yellow

9. One unconventional indicator is red cabbage juice. What color will this common liquid turn in a base? Purple Blue-Green Red Yellow

10. An indicator that you wouldn't find at home is Phenol Red. What color does this indicator turn in an acid? Red Yellow Green Pink