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Nelson EducationSchoolChemistry 12 College Prep | ||||||||||||||||||||||||||||||||||||||||||||||||
Workbook Web LinksUNIT 4: CHEMISTRY IN THE ENVIRONMENTClick on a section below for related Workbook Web links:
Section 4.1 Extension Exercise p. 200 Case Study: Is Lake Erie Saved?—Extra Challenge 3. Some scientists have suggested that populations of zebra mussels in Lake Erie were largely responsible for clearing the waters of the lake and giving the appearance that pollution controls were working. Research the zebra mussels in the Great Lakes. (a) How did zebra mussels, a non-native species, arrive in the Great Lakes? (b) How do zebra mussels improve water clarity and control algal growth? (c) What effect do zebra mussels have on fish populations?
Section 4.3 Extension Exercise p. 207 Explore an Issue: Is Municipal Water Safe to Drink?— Extra Challenge 2. Research the standards that are now part of the Ontario Safe Drinking Water Act, 2002.
p. 209 Section 4.3 Extension Exercise Explore an Issue: Tap or Bottled Water?-Extra Challenge (b) Research the current Canadian regulations that ensure the safety of bottled water.
Section 4.5 Extension Exercise p. 219 Activity: Home Water Purification Technologies ?-Extra Challenge (f) Determine whether your community is in compliance with the Ontario Safe Drinking Water Act, 2002. Are there any problems identified with your water supply?
Section 4.6 Extension Exercise p. 222 Activity: Identify an AOC and Propose a RAP -Extra Challenge The Ministry of the Environment has identified 42 Areas of Concern (AOCs) in the Great Lakes Basin. (Refer to Figure 1 in the Student Text.) In this activity, you will research an AOC and develop a Remedial Action Plan (RAP) for the area.
p.226 Take a Stand: How Will I Dispose of a Hazardous Household Product? (a) Work in small groups to identify two hazardous commercial products that are found in many Canadian homes. Identify both the hazard and the level of the hazard from the product label. Research the component(s) of each product that require careful handling and disposal. Complete Table 1.
pp. 228 - 230 Section 4.8 Extension Exercise Activity: Home Hazardous Product Survey—Extra Challenge (b) Research safer alternatives for a hazardous household product found in your home.
p. 233 Dilution and pH (s) Colorimetric analysis is the process of determining the concentration and pH of a solution of unknown concentration by matching the colour to solutions of known concentration and pH. A colorimeter mechanically performs the same analysis. Research how a colorimeter works. How might a colorimeter improve the accuracy of your results in this investigation? How do you think the results obtained using a colorimeter would compare with the results obtained using a pH meter?
Section 4.16 Alternative Exercise p. 264 Explore an Issue: The Nature Challenge a) Investigate the ten challenges in the Nature Challenge. Discuss how you think each challenge will help the environment.
Section 4.17 Extension Exercise p. 266 Activity: Indoor Air Quality Technology—Extra Challenge (a) Investigate pollutants in your home. For each pollutant, identify the source and suggest how it might be avoided. (b) Research and identify four things that you can do or use to help purify the air in your home. Consider both natural methods and available technology. For each suggestion, identify the air pollutant that is removed and describe how the pollutant is removed.
(c) Different air cleaners use various technologies to remove specific contaminants from the air. Some newer products often combine two or more of these specific technologies. Research different types of air cleaners, and explain how they work to eliminate air pollutants.
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