Teacher Notes
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Teacher Notes![]() Testing Pollution in Tap WaterSuper Value Laboratory KitMaterials Included In Kit
Chlorine DPD #4R TesTabs, 15
Copper HR TesTabs, 15 pH wide range TesTabs, 15 Total hardness test strips, 50 Total Iron TesTabs, 15 Chlorine color comparison chart Copper color comparison chart Iron color comparison chart pH color comparison chart Water sample tubes, 15 Safety PrecautionsSee the safety precautions section in the student section. Wear chemical splash goggles, chemical-resistant apron, and chemical-resistant gloves. Please review current Safety Data Sheets for additional safety, handling, and disposal information. DisposalPlease consult your current Flinn Scientific Catalog/Reference Manual for general guidelines and specific procedures, and review all federal, state and local regulations that may apply, before proceeding. Reacted samples may be disposed of according to Flinn Suggested Disposal Method #26b. Teacher Tips
Further ExtensionsHave students write reports on a certain pollutants, their sources and effects. Encourage students to use the Internet to explore the wide range of water pollution information available. Correlation to Next Generation Science Standards (NGSS)†Science & Engineering PracticesPlanning and carrying out investigationsAnalyzing and interpreting data Disciplinary Core IdeasMS-ESS3.C: Human Impacts on Earth SystemsHS-ESS3.C: Human Impacts on Earth Systems Crosscutting ConceptsStability and changePerformance ExpectationsHS-PS1-2: Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties. Answers to Questions
DiscussionHere are the reactions that take place for each sample: ReferencesCunningham, W. P.; Woodworth, S. B. Environmental Science A Global Concern; William C. Brown: Dubuque, IA, 1995; pp 424, 429, 430. Recommended Products
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Student Pages
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Student Pages![]() Testing Pollution in Tap WaterIntroductionWhat types of pollutants are in our water? How do these pollutants affect us? In this activity, the amount of pollutants in drinking water will be tested. Concepts
BackgroundWater is an essential resource for humans. It is used for almost every activity in life and is required for life itself. In fact, water is the main component in cells and it composes up to 60 to 70 percent of the weight of living organisms. Water is needed for agricultural and industrial use, drinking, transportation, and in recreation. Water often seems to be available in an almost endless supply, but as populations rise and our world becomes increasingly industrialized, more and more water is being used. With this extensive use of water, a problem arises—the water becomes polluted and contaminated. This pollution leads to a strain on water’s ability to recycle and cleanse itself of contaminants. It is now estimated that over one billion people are unable to obtain adequate drinking water. The amount of water available, its distribution, and its quality are critical issues that continue to affect all life. An increasing awareness of the need to monitor the quality of water and to locate the sources of pollution is becoming more prevalent in today’s society. Experiment OverviewIn this activity, the quality and the amounts of pollutants in tap water will be tested. Materials
(for each lab group)
Chlorine DPD #4R TesTab® Copper HR TesTab pH wide range TesTab Total Iron TesTab Chlorine color comparison chart Copper color comparison chart Iron color comparison chart pH color comparison chart Tap water samples Total hardness test strip Water sample tube Safety PrecautionsChlorine DPD #4R TesTabs, Copper HR TesTabs and Total Iron TesTabs contain chemicals that may irritate skin or be harmful if swallowed. pH wide range TesTabs contain trace amounts of dyes and inert fillers. The TesTab reagents used in this kit were designed with safety in mind. The single-use, foil packaged TesTabs are easy to dispense. Store TesTabs in a cool, dry place and only open when ready to use the tablet. A single tablet, either alone or reacted with a sample, is not a health hazard. However, TesTabs should not be ingested. Wear chemical splash goggles, a chemical-resistant apron and chemical-resistant gloves. Please review current Safety Data Sheets for additional safety, handling and disposal information. ProcedurePart 1. Chlorine Test
Student Worksheet PDF |