Web Activities
UNIT 5: ELECTROCHEMISTRY
Chapter 9: Electric Cells
p. 653
Practice
6. Archaeometallurgy is the study of ancient metallurgy using
modern analytical techniques. Give some examples of research in this
field. Can a metal from one mine be distinguished from the same metal
from another mine? How can this information be used in archaeological
studies?
Archaeometallurgy
This simple website provides a brief description of the study of archaeometallurgy,
along with a list of its major components.
Archaeometallurgy
in Archaeology
This article details how archaeometallurgy is used in archaeological
projects. Archaeometallurgy can be used to identify artifacts that archaeologists
might not normally be able to identify.
p. 663
Section 9.1 Questions
11. Police forces use various instruments and processes to
determine whether a person is legally impaired. What is the difference
in operation between the Breathalyzer and the Intoxilyzer? Describe
briefly how redox reactions are involved.
How
Breathalyzers Work
This "How Stuff Works" website explains in very straightforward
language how breathalyzers work. Not only does it explain the principles
and mechanism behind the testing, but there is also a page of links
provided, for other sources of information.
Approved
Breath-Test Instruments
This website is provided by a Canadian company, "Forensic Consulting,"
that provides services in toxicology and drug identification. In this
website (you can also click a button for a printable version), it explains
a few different systems that can be used to detect blood alcohol levels.
p. 684
Section 9.3 Questions
13. Ursula Franklin is an internationally recognized scientist
in her field. She has many interests and is outspoken on many topics.
Briefly describe her pioneering scientific work and outline her views
about science and technology and funding for scientific research. What
other causes does she support?
Canadian
Women in Science: Ursula Franklin
This National Library of Canada website is devoted to Ursula Franklin,
the metallurgist and pioneer of archaeometry. It provides a biography
of her busy life, along with a list of additional resources that could
be consulted to find out more about her.
Ursula
Franklin: People First Technology
This website contains information about an important interview with
Ursula Franklin, along with an audio transcript of that interview.
The
Corrosion Resistant Delhi Iron Pillar
This website contains an article from an online journal on the Delhi
Iron pillar. It explains the physical uniqueness of the pillar, and
uses chemistry to propose some possible explanations for the pillar's
unique properties.
p. 690
Practice
13. 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 the requirements for cells used in these applications?
b. Why are some rechargeable batteries used in various portable devices
supposed to be “drained” (discharged) before recharging?
Will
Your Rechargeable Battery Die an Early Death?
This website belongs to a group of websites devoted to LCD projectors,
but this page explains the difference between Nickel-Cadmium and Lead
Acid batteries. It provides tips for obtaining the best possible performance
from these batteries.
Rechargeable
Batteries
This corporate website explains the difference between a few common
rechargeable batteries, focusing especially on "discharge"
characteristics.
Rechargeable
Batteries for Cordless Phones
This website belongs to HelloDirect.com, which is an online telecom
resource. The site is devoted exclusively to rechargeable batteries
for cordless phones.
p. 690
Practice
14. Moli energy of Maple Ridge, BC was the first company in
the world to develop a commercial, rechargeable lithium cell called
a Molicel. Research the characteristics and advantages of Molicles compared
with other secondary cells.
Molicell
Lithium-Ion 18650 Cell
This corporate website provides basic information for batteries that
are used in industry. The website covers the advantages of one particular
cell, and contains a link to its full datasheet.
Lithium
Ion Batteries: A Profitable Future
This website provides a report on the lithium-ion batteries produced
by Nippon Moli Energy Corporation, a company that resulted after a Japanese
company bought a Canadian company.
Searching
for the Perfect Battery Cell
This media release from Simon Fraser University in British Columbia
describes the university's scientists pursuit of the perfect battery.
p. 693
Practice
21. 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 of the advantages and disadvantages?
Hopkins
Scientists Create All-Polymer Battery
This article describes a technological development made by scientists
at Johns Hopkins University. The "plastic" battery is described,
and its many advantages and potential uses are mentioned.
Alan
MacDiarmid, Conductive Polymers, and Plastic Batteries
Along with a link to many additional resources, this website of the
Office of Scientific and Technical Information discusses MacDiarmid
(Nobel Prize Winner in 2000) and his role in developing cells from polymers.
p. 694
Explore an Issue – Debate: Hydrogen Fuel Cells
In your research, consider:
• where does the hydrogen come from?
• from source to final end product, are hydrogen fuel cells
nonpolluting?
• other perspectives, such as economic, social, political, and
technological.
• alternative to the hydrogen fuel cell.
Automobiles
Using Fuel Cells
This website was produced by scientists at Michigan State University.
It explains very systematically and clearly how automobile fuel cells
work. The authors also provide an explanation of much of the background
science required to understand fuel cells.
Life-Cycle
Value Assessment (LCVA) for Fuel Cell Vehicles in Canada
This publication is provided by the Pembina Institute, a non-profit
environmental organization dedicated to promoting awareness of critical
environmental issues in Canada. This report examines the impact of the
adoption of fuel cell cars in Canada.
Heading
Towards a Hydrogen Future
This May 2000 article was written by David Suzuki. In it, he explores
both the positive and negative sides of the fuel-cell debate, arguing
primarily that if hydrogen fuel cells are to be adopted, we must ensure
that the hydrogen is obtained in a responsible manner.
p. 694
Section 9.4 Questions
9. People whose heart occasionally beats too slowly or too
quickly often have pacemakers to keep the heart beating regularly. Pacemakers
use a battery for electric power. What kind of battery is commonly used
today? 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?
History
of Pacemakers
This corporate website belonging to Medtronic covers the evolution of
the pacemaker, from the earliest "external" pacemakers of
the 1950s to the computer-like models of the new millenium.
Pacemakers
This Web site addresses some of the most frequently asked questions
about pacemakers, such as how they work, how they are implanted, and
whether pacemaker patients are safe around electrical devices.
When
Your Battery Goes Down
This website provided by GlobalClassroom.org has many questions and
answers about pacemakers, including questions about what one does when
the battery in a pacemaker dies.
p. 714
Section 9.6 Questions
10. A zinc wire is connected to and buried with a pipeline
when it is built.
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
This corporate website contains links to other pages with information
about the various products that Pollyaim Ltd makes in order to help
protect pipelines from corrosion.
Pipeline
Corrosion
This website is provided by NACE, the National Association of Corrosion
Engineers. In this webpage, they describe the various forms of protection
available for preventing pipeline corrosion: coatings and linings, cathodic
protection, materials selection, and corrosion inhibitors.
Corrosion
Protection Systems
This corporate website explains the services of an Australian company
that protects various industries (telecommunications, oil, water, etc.)
from damage due to corrosion in a variety of projects.
NTSB
Determines that Inadequate Corrosion Protection Caused Fatal Pipeline
Rupture
This website contains a press release from the U.S. National Transportation
Safety Board, stating that a pipeline rupture that led to two deaths
was caused by a company's negligence in providing adequate corrosion
protection for the pipeline.
