Table_of_Contents_Environmental_ScienceLab_2Water_Quality_and

Table of Contents Environmental Science

Lab 2

Water Quality and Contamination

Introduction

Concepts to ExploreConcepts to ExploreConcepts to ExploreConcepts to Explore

Water Quality and Contamination

Experiment 1: Effects of Groundwater Contamination

Procedure

Materials

Water Quality and Contamination

Hypothesis

Water Quality and Contamination

Post-Lab Questions

Water Quality and Contamination

Experiment 2: Water Treatment

Procedure

Materials

Water Quality and Contamination

Hypothesis

Post-Lab Questions

Water Quality and Contamination

Experiment 3: Drinking Water Quality

Procedure

Ammonia Test Strip

Materials

Water Quality and Contamination

Chloride Test Strip

4 in 1 Test Strip

Water Quality and Contamination

Phosphate Test Strip

Iron Test Strip

20.

Table of Contents Environmental Science

Hypothesis:

Post-Lab Questions

Water Quality and Contamination

Test Strip Key:

Water Quality and Contamination

Test Strip Key (cont.):

Lab 2 - Experiment 1: Effects of Groundwater Contamination

Table 1: Water Observations (Smell, Color, Etc.)
Beaker	Observations
1	Clean water
2	Oil separates and rises to the top, may smell oily
3	Clear, continuous solution, smells like vinegar
4	Blue, continuous solution, smells like soap, may have some bubbles on top
5	Clear or murky water, may have a small amount of precipitation on the bottom
6	Oil pockets visible with precipitation possible at bottom
7	Clean or murky, may have a small amount of precipitation on the bottom
8	Bluish water, thick and smells of detergent

Hypothesis:

Post-Lab Questions

1. Restate your hypothesis. Was it confirmed or denied? How do you know?

2. What affects did each of the contaminants have on the water in the experiment? Which contaminant seemed to have the most potent effect on the water?

3. On a larger scale, what type of affects would these contaminants have on a town’s water source and the people who drank the water?

4. What type of human activity would cause contaminants like oil, acid and detergents to flow into the water supply?

Lab 2 - Experiment 2: Water Treatment

Hypothesis:

Post-Lab Questions

1. Restate your hypothesis. Was it confirmed or denied? How do you know?

2. Following step 9 you are left with water containing a slight brown tint, additionally, following step 11 you are left with an initial beaker of “contaminated water” that is dark brown and smells of soil and a beaker of “treated water” that is clear and odorless. Do you believe that the water treatment worked? Why or why not? Provide evidence to support your thoughts.

Lab 2 - Experiment 3: Drinking Water Quality

Table 2: Ammonia Test Results
Water Sample	Test Results
Tap Water	0 – 0.50 mg/L
Dasani® Bottled Water	0 – 0.50 mg/L
Fiji® Bottled Water	0 – 0.50 mg/L

Table 3: Chloride Test Results
Water Sample	Test Results
Tap Water	0 - 500 mg/L
Dasani® Bottled Water	0 - 500 mg/L
Fiji® Bottled Water	0 – 500 mg/L

Table 4: 4 in 1 Test Results
Water Sample	pH	Total Alkalinity	Total Chlorine	Total Hardness
Tap Water	6 - 7	0 - 40 mg/L	0.2 – 4.0 mg/L	0 - 120 mg/L
Dasani® Bottled Water	6 - 7	0 – 40 mg/L	0.2 – 4.0 mg/L	0 - 120 mg/L
Fiji® Bottled Water	5 - 6	0 - 40 mg/L	0.2 – 4.0 mg/L	0 – 120 mg/L

Table 5: Phosphate Test Results
Water Sample	Test Results
Tap Water	0 - 10 ppm
Dasani® Bottled Water	0 - 10 ppm
Fiji® Bottled Water	0 - 10 ppm

Table 6: Iron Test Results
Water Sample	Test Results
Tap Water	0 – 0.15 ppm
Dasani® Bottled Water	0 – 0.15 ppm
Fiji® Bottled Water	0 – 0.15 ppm

Hypothesis:

Post-Lab Questions

1. Restate your hypothesis. Was it confirmed or denied? How do you know?

2. After comparing the results of tap water and bottled water, what major differences, if any, do you notice between the two?

SCI208

Week Two

Alternative Laboratory

1. Due by Day 7. Water Quality and Contamination. Read Lab 2: Water Quality and Contamination. This

lab will allow you to investigate the effects of common pollutants on groundwater as well as mimic the

filtration process utilized by wastewater treatment facilities. Read through the steps typically performed for

Experiments 1 through 3. Follow the steps and analyze the sample data generated on the Lab 2 Reporting Form

to answer the lab questions. Make sure that all of the following items are completed before submission:

a. Read through intro material and record your hypothesis for Experiment 1 on the Lab 2 Reporting

Form.

b. Read through “Experiment 1: Effects of Groundwater Contamination” using your eScience lab

manual.

c. Utilize the sample data in Table 1 of your Lab 2 Reporting Form to answer post lab questions 1

through 4 on the Lab 2 Reporting Form.

d. Record your hypothesis for Experiment 2 on the Lab 2 Reporting Form.

e. Read through “Experiment 2: Water Treatment” using your eScience lab manual.

f. Answer post lab questions 1 and 2 on the Lab 2 Reporting Form.

g. Record your hypothesis for Experiment 3 on the Lab 2 Reporting Form.

h. Read through “Experiment 3: Drinking Water Quality” using your eScience lab manual.

i. Utilize the sample data in Tables 2 through 6 of your Lab 2 Reporting Form to answer post lab

questions 1 and 2 on the Lab 2 Reporting Form.

All post lab questions for “Lab 2: Water Quality and Contamination” only should be completed on the Lab 2

Reporting Form. Save your completed Lab 2 Reporting Form as a Word document. The document must be

formatted according to APA style, including a title page and references page. For information regarding APA

samples and tutorials, visit the Ashford Writing Center, within the Learning Resources tab on the left

navigation toolbar, in your online course. Submit the document via the Assignment Basket in your online

course.

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