Title: Measuring pH Levels
Instructions: Enter the Virtual Lab, and conduct the experiments provided before going out into the virtual field for additional research. Please type your answers on this form. When your lab report is complete, submit it to the Submitted Assignments area of the Virtual Classroom.
Part I: Answer the following questions while in the Phase 1 lab environment.
Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. Based off of the results obtained in the lab room, fill in the following table:
Solution Number pH from Lab Acid, Base or Neutral? Solution Name (what was in the test tube?)
Solution 1 6 Neutral Water
Solution 2 0 Acid Lemon Juice
Solution 3 12 Base Bleach
Solution 4 5 Base Coffee
1. How many drops of wide range indicator will you use for each test, based on industry standards such as the LaMotte field test? 1 drop
Section 2: Now that you understand how to read pH measurements, go out into the field to gather pH samples from 3 different lakes to take back to the lab for testing, and answer the following question:
2. What was the pH level measured at Lake 1? 6
3. What was the pH level measured at Lake 2? 3
4. What was the pH level measured at Lake 3? 5
5. Which two lakes have the highest levels of acidity in their water?
6. Based off of the information gathered at each lake, explain why your results may have turned out this way. What environmental phenomenon is at work here?
a. Well the pollutants from the car factory caused the
Part II: For the following questions, provide your response in short-answer format (2–3 detailed sentences each). Use this Phase’s activities and resources to assist you in answering.
7. What is pH?
8. What is a base?
9. What is an acid?
10. What does it mean if a solution has more hydrogen ions (H+)?
11. What does it mean if a