Measuring pH Levels

  

Lab Phase 1.doc
lab_phase_1.doc

lab_phase_1.doc

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Measuring pH Levels
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Name:
Date:
Instructor’s Name:
Assignment: SCI103 Phase 1 Lab Report
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
Solution 1
Solution 2
Solution 3
Solution 4
pH from Lab
Acid, Base or
Neutral?
Solution Name (what was in the test
tube?)
1. How many drops of wide range indicator will you use for each test, based on industry
standards such as the LaMotte field test?
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?
3.
What was the pH level measured at Lake 2?
4.
What was the pH level measured at Lake 3?
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?
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 solution has more hydroxide ions (OH-)?
12.
What does it mean if a solution is neutral?
13.
Explain the pH scale and how it is used to indicate acidic, alkaline, and neutral solutions.
14.
What does it mean in terms of strength when the pH of an acid changes from 5 to 4?
Name:
Date:
Instructor’s Name:
Assignment: SCI103 Phase 1 Lab Report
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
Solution 1
Solution 2
Solution 3
Solution 4
pH from Lab
Acid, Base or
Neutral?
Solution Name (what was in the test
tube?)
1. How many drops of wide range indicator will you use for each test, based on industry
standards such as the LaMotte field test?
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?
3.
What was the pH level measured at Lake 2?
4.
What was the pH level measured at Lake 3?
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?
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 solution has more hydroxide ions (OH-)?
12.
What does it mean if a solution is neutral?
13.
Explain the pH scale and how it is used to indicate acidic, alkaline, and neutral solutions.
14.
What does it mean in terms of strength when the pH of an acid changes from 5 to 4?

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