|
|
|
|
| |
|
|
|
Nelson EducationSchool | |||||||||||||||||||||||||||||||||||||||
Web LinksUnit 5 - Organic Chemistry
Unit 6 - Chemical EnergyUnit 7 ElectrochemistryUnit 8 Chemical Equilibrium Focusing on Acid-Base SystemsChapter 14 Electrochemical CellsSection 14.1 Technology of Cells and Batteries Web Activity: Canadian Achievers-Lewis Urry (page 69)After graduating in chemical engineering from the University of Toronto in 1950, Lewis Urry went to work for Eveready Battery Company where he developed the first practical, long-life electric cell. Born in 1927 in Ontario , Urry died on October 19, 2004 .
Click "Run " to view an animation of the reactions in an alkaline cell. Case Study: The Ballard Fuel Cell (page 70)Question 2One solution to the hydrogen storage problem is to make hydrogen as it is needed using a reformer. Research how reformers can be used to produce hydrogen. Where
Does Hydrogen Come From? Question 3 Iceland has ambitious plans to be the first nation to replace all its use of fossil fuels with "clean" hydrogen. Research how Iceland plans to produce the hydrogen it will need. Iceland's
Hydrogen-Filling Station Powering
Iceland with Hydrogen Section 14.1 Questions (page 71) Question 9 Most people associate technological development with "progress" in Western societies and think that technology transfer to Aboriginal peoples only occurs in one direction. In fact, although not often recognized and valued, there has been significant technology transfer from Aboriginal peoples to Western society. Summarize several examples of significant Aboriginal technological knowledge that was transferred to early European settlers. What area is still a significant source of technological transfer from Aboriginal to Western societies? Why is this an area of dispute? Aboriginal
Technology Question 10 Portable electronic devices can be found everywhere. Laptop computers, cellular telephones, mobile radios, cordless phones, portable disc and MP3 players, and digital cameras all require an electric cell. (a) What are some of the requirements for cells used in these applications? (b) Why are some rechargeable batteries used in various portable devices supposed to be totally "drained" (discharged) before recharging? Tips
for Rechargeable Batteries The
World of Rechargeable Batteries Cordless
Phones and Rechargeable Batteries Question 11 People whose heart occasionally beats too slowly or too quickly often have pacemakers to keep their hearts beating regularly. Pacemakers use a battery for electric power. What kind of battery is commonly used today? How long does it last? How does the doctor know when the battery is nearing the end of its life and needs to be replaced? Why are rechargeable batteries generally not used? The
History of the Pacemaker What
Is a Pacemaker? Pacemakers
and Batteries Question 12 Moli Energy of Maple Ridge, BC was the first company in the world to develop a commercial, rechargeable lithium - ion cell, called a Molicel. Research the characteristics and advantages of Molicels compared with other secondary cells. Molicell
Lithium Ion Cell The
Future of the Lithium Ion Cell The
Latest on the Lithium Ion Cell Question 13 Plastic batteries were the dream of the 1980s, the disappointment of the 1990s, and the subject of the 2000 Nobel Prize for Chemistry. Now it appears that some commercial products will eventually result from the research and development invested in plastic batteries. Briefly describe the electrodes and electrolyte for a plastic battery. How is this battery similar to and different from an ordinary battery? What are some advantages and disadvantages? The
Plastic Battery Alan
MacDiarmid Section 14.2 Voltaic Cells Web Activity: Analyzing Standard Voltaic Cells (page 80)In this computer simulation, SIR Volta, you will construct many different voltaic cells under standard conditions using ten different half-cells, and then analyze their components and processes. You will need to refer to the redox table in Appendix G to make your predictions.
WEBLINK to SIR Volta: Voltaic Cells- coming soon Biology Connection: Reduction Potentials (page 83)Career Connection: Materials Engineering Technologist (page 86) How does materials engineering relate to corrosion? Research the entrance requirements, job prospects, and typical salaries for technologists in this field. Materials
Engineering Technologist Materials
Engineering Technology Web Activity: Galvanizing Steel (page 87) In this computer simulation, you will learn about the steps involved in one type of galvanizing process.
Click " Run " to start the animation. Caustic cleaning and rinsing [In the 1 st & 2 nd containers] Steel is immersed in a basic solution to remove organic material such as grease and dirt. Pickling and rinsing [In the 3 rd & 4 th containers] Steel is immersed in an acid bath (hydrochloric or sulfuric acids) to remove mill scale and rust. Flux solution [In the 5 th container] The flux solution contains chemicals that promote a surface reaction between the steel and zinc and retard further oxidation of the steel. Molten Zinc bath (Galvanizing) [In the 6 th container] The very clean steel is lowered into molten zinc at about 450 °C. The surface of the steel reacts with the zinc to form zinc-iron intermetallic compounds and an outer layer of pure zinc.] The following animation compares the corrosion resistance of a galvanized pipe with a painted pipe over a period of thirty years. Click " Run " to start the animation. Section 14.2 Questions (pages 87-88) Question 12 A zinc wire is connected to and buried with a pipeline when it is built (Figure 20). (a) Why is this done? Include a brief description of the principles involved. (b) Is this the only type of corrosion protection used with major pipelines? (c) Discuss the environmental and safety issues associated with protecting and also not protecting pipelines. Pipeline Corrosion
Protection Controlling
Pipeline Corrosion Cathodic Protection
Systems One Consequence of Inadequate Pipeline Corrosion Protection This press release from the U.S. National Transportation Safety Board states that a pipeline rupture that led to two deaths was caused by a company's negligence in providing adequate corrosion protection for the pipeline. Section 14.3 Electrolytic Cells Web Activity: Downs Cells and Hall-Héroult Cells (page 98) In this computer simulation, SIR Faraday, you can make and test predictions about the components and processes in two important industrial cells.
WEBLINK to SIR Faraday- coming soon Career Connection: Chemical Technician (page 100) Chemical technicians may work closely with scientists and engineers studying electroplating processes. What education and training is required for this job? Outline some current job opportunities in this area, including typical salaries. Chemical
Technician The
Future for Chemical Technicians Laboratory
Technicians Section 14.3 Questions (page 101) Question 14 (c) German silver does not contain any silver metal. Why is it called German silver? Why is it a very useful alloy? German
Silver Question 17 The one-dollar coin, or the loonie replaced the one-dollar bill, which typically wore out in the space of a few months. Sherritt Gordon of Fort Saskatchewan, Alberta developed a unique process for plating the loonie coin. (a) Research the production and composition of the loonie. (b) What is the golden "aureate" finish on the loonie? Describe the materials and process for producing this finish. (c) Why did the coin end up with a loon stamped on it? The Loonie The
Chemistry of the Loonie Question 19 Electroplating industries produce considerable waste that is expensive to manage and an environmental hazard if not treated properly. List four different types of electroplating waste, including potential hazards. Describe some ways that companies reduce, recover, and treat electroplating wastes. Electroplating
Wastes Section 14.4 Cell Stoichiometry Web Activity: Electrolytic Cell Stoichiometry (page 107)In this activity, you perform calculations that are similar to calculations done by scientists and engineers when designing and monitoring an industrial cell.
WEBLINK to SIR Faraday- coming soon Unit 7 Review (pages 115-119) Question 52 Battery technology is a very active area of research. One proposal that shows some promise is a vanadium redox flow cell, also known as the All Vanadium Redox Battery. Describe the general construction of this battery, including electrodes, electrolytes, porous boundary, and external tanks. What redox reactions occur at the electrodes within this cell? List some unique aspects of this technology, as well as some advantages and proposed uses. Nickel-Metal Hydride
(NiMH) Batteries Evaluating
the Nickel-Metal Hydride Battery Question 53 (c) Research and list some of the technological, economic, and environmental considerations involved in evaluating the NiMH battery. The Vanadium Redox Battery
Information
on the Vanadium Battery Question 55 The Alberta government is considering making carbon monoxide detectors mandatory for new residential homes as is done in Ontario. What are the sources and the health effects of carbon monoxide? Briefly describe how a modern CO detector works including the reaction equations and catalyst involved. Should CO detectors be required in all homes? Justify your opinion. The Health
Effects of Carbon Monoxide Carbon
Monoxide Detectors Question 56 Sludge and wastewater from electroplating processes contain chromium, copper, gold, nickel, and silver, as well as cyanide ions. Sending these metals to landfill or discharging them in wastewater, instead of recycling them, is detrimental to the environment and wasteful of energy. Technologies are being developed to separate and purify these metals including precipitation, electrolysis, and reverse osmosis. Research one technology designed to reduce the environmental impact of the electroplating industry, and prepare a short presentation on how it works. Recycling Water
from Electroplating Processes Hexavalent
Chromium Waste Treatment
|
|||||||||||||||||||||||||||||||||||||||||
|
|
| |
