eric perrySCI207.W2.LabReportingForm.doc

eric perrySCI207.W2.LabReportingForm.doc - Lab 2 Water...

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Lab 2 – Water Quality and Contamination Experiment 1: Effects of Groundwater Contamination Table 1: Water Observations (Smell, Color, Etc.) Beaker Observations 1 Only has groundwater, there is no smell. 2 There is a thick layer of film at the top of the groundwater. As I stir thoroughly there is no smell but bubbles do appear. There is a slight color change in the water. 3 Vinegar dissolves in with water. As I thoroughly stirs mixture there is no activity. Because the vinegar is stronger than the groundwater there is a concentrated smell from the vinegar. 4 The liquid detergent flows straight to the bottom. As I stir thoroughly the liquid detergent changes the color of the water also forming bubbles. 5 Pouring the contents of beaker 1 through the soil causes some of the soil to flow through the cheesecloth causing the water to change color with particles of the soil flowing. 6 It seems that the soil prevent the oil from breaking into the beaker. I say this because there is no thick texture to the water in the beaker. 7 the smell from the vinegar is not as stronger because the soil texture hold some of the © eScience Labs, 2013
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smell. 8 The contents from the makes the soil rises from the funnel causes the liquid to slowly dissolve into the beaker. Beaker 4 still holds it color but there is no bubbles. POST LAB QUESTIONS 1. Develop hypotheses on the ability of oil, vinegar, and laundry detergent to contaminate groundwater. a. Oil hypothesis = since the oil is a heavier substance it will float on top of the water b. Vinegar hypothesis = since vinegar is a stronger smell than groundwater this smell will be very concentrated but the two liquids will collide with another, since neither one is a heavier than the other. c. Laundry detergent hypothesis = will change the color of the water with foaming bubbles.
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