You and a partner will be performing water quality tests on water that you collected from a canal, lake, or pond. This lab will take two days to complete. You must wear proper laboratory attire (closed toed shoes, goggles, aprons, gloves) in order to participate in this lab. We will meet in the classroom across the hall from 8154.
Numbers 1-4 below are due before the lab begins on Wednesday in your lab notebook:
1. Title
Creative title
2. Pre-Lab Questions
Number & answer the (13) pre lab questions below- DO NOT WRITE THE QUESTION. The answers MUST be written in complete sentences. Use the background information on edline as a reference. If you use the internet be sure to cite your sources.
3. Background Information
Write a paragraph explaining the site conditions of your water sample. Include the location and any indicators of eutrophication or pollution. Rank your water sample (hypothesize) on a scale of 1 (no pollution) to 10 (highly polluted) based on the source of your sample.
4. Data: Copy this chart below. Fill in the “acceptable range or optimal range” column using the background information on edline.
Title
Acceptable or optimal range for aquatic organisms
Results with units
Insta-Test Strips results with units pH Alkalinity
DO
X
Turbidity
20-40 JTU X
Nitrate
Phosphate
X
Fecal Coliform Negative X
Chlorine
X
X
Hardness
X
X
Pre Lab Questions:
1. Define Turbidity and name 2 ways in which water can become turbid.
2. Other than blocking out light, what is another problem with turbid water?
3. What is the pH of coca-cola? Lemon juice? Bleach?
4. Is a water sample with a pH of 4 more acidic or basic than a water sample with a pH of 7? How many times?
5. Name one source of dissolved oxygen (DO).
6. Discuss the relationship between temperature and dissolved oxygen and relate this to thermal pollution.
7. Discuss the relationship between