Illustrations of a variety of techniques used by chemists
to separate substances from mixtures and solutions.
All the facts in quick-reference form, with diagrams and
Pure Substances and Mixtures
and Pure Substances. Some basic definitions and examples.
and solutions. Four scientists explain the difference
between mixtures and solutions, with everyday examples.
Filtering Mechanical Mixtures
A well illustrated page covering the basics of chromatography, with
a dozen techniques for separating mixtures.
Panning Panning Technique. A real "how-to" guide.
Are All Solvents Alike?
is Dry Cleaning? Description of drycleaning process sponsored
by the Better Business Bureau of Eastern Massachusetts, Main and
Valdez Oil Spill Restoration. Offers cleanup information,
a guide to the injured ecosystem, and descriptions of ongoing
activities to preserve the environment.
Recipe Guides and Directories. Links to pages of pie recipes.
The Rate of Dissolving
Art. A straightforward guide to brewing soda at home.
Crystals. Grow your own crystals. There are many recipes
for crystals on this site, plus good illustrations.
of Snow Crystals. This site is all about snow crystals
and snowflakes. Although a common meteorological phenomenon,
snow crystal growth is a fascinating and poorly understood process,
in which remarkably complex and beautifully symmetric structures
appear, quite literally, out of thin air.
Unnatural Museum - Experiment Growing Crystals. A
quick-and-easy method of forming crystals of salt and sugars.
Chemistry Online Home Companion: Matter: Separating Mixtures.
A point-form summary (written for advanced chemistry students)
of separation techniques for different kinds of mixtures.
do neon lights work? A Page at HOW THINGS WORK. Type in
"neon signs" in the search engine. It explains how neon
signs are made and work.
Sickness. In depth information about decompression
Sickness (Caisson Disease; The Bends). A disorder resulting
from reduction of surrounding pressure (as in ascent from a dive,
exit from a caisson or hyperbaric chamber).
energy. A list of links to sites dealing with many
different kinds of alternative energy.
fuel vehicles. A variety of links on alternative
vehicle design, costs, tests, and even where to refuel in the
cities. A list of sites promoting clean cities in the
Products from Raw Materials
Bicycles: Materials. A commercial site advertising top-of-the-line
bikes with details on materials and specifications.
ceramics. A commercial site showing ceramics developed
with particular properties for specific purposes.
Steel Association - How steel is made. Diagrams showing steel
process routes. Text descriptions of steel processes and products.
Examples of the varied end uses of steel product.
The Chemistry Industry and History. A good site that
explains how oil is refined and much more.
Concrete for Construction
Confederation Bridge. A site about the Confederation
Bridge by the company that supplied the cement. Learn all about
the different kinds of concrete used in this massive project.
Solvents in the Laundry
& Stain Removal Guide. How to get most stains out
using a variety of commercial or household solvents.
Service Company - Grass to Grease. Another stain-removal site.
The Importance of Water
of Canadians Water Campaign. This site outlines the many
campaigns of the Council, including fighting the export of Canadian
Environmental Protection Agency Water Resources. A searchable
online database and a huge store of publicly available information
about wetlands, wastewater, etc., from the EPA. Maps are also
available as part of this useful resource.
Nature Conservancy. A great place to find out what's
new in the area of nature conservation from the organization that
works to conserve natural habitats and species by purchasing the
land and waters they need to survive.
Testing Water Quality
Water - Life Depends on It! An Environment Canada site
containing many useful facts.
Salt. The advantages of water softening, from an industry
point of view..
Water Treatment. A commercial site, selling a magnetic
treatment for hard water problems.
Household Hazardous Waste
House. An interactive Web site providing information on
hazardous products. You can tour the rooms of the Virtual House
and click on products typically found there to learn more about
a product's hazard, personal protection, safer alternatives, and
best management practices.
Hazardous Wastes. This page from The Household Hazardous
Waste Project has many Guide sheets about: Household Hazardous
Products, Identifying Product Hazards Material Safety Data Sheets,
Safe Use Storage and Disposal of Paint, Home Hazardous Product
Up Our Water
Lakes United. An international coalition dedicated to
preserving and protecting the Great Lakes — St. Lawrence River
Thames River Conservation Authority. Information about efforts
made to preserve and improve the environment of the Thames River
in Southwestern Ontario.
Wetlands Campaign. An American organization promoting
public involvement in preserving wetlands.
of Wetland Scientists - Wetland Jobs.
A list of sites containing job postings or volunteer opportunities
— most in the U.S.A.
About Fluoridation. Fluoride fact sheet that offers an
overview of both sides of the fluoride debate. With links to articles
that discuss each side of the controversy.
Issues. An independent site with links to other sites
concerned about water fluoridation.
Protected Pollutant or Panacea? The "con"
side of fluoridation.
Dental Health Association. An association dedicated
to providing public information and support on dental health issues;
generally against fluoridation.
Facts on the Biological Effects of Fluorides. Quotations
taken from scientific journals highlighting concerns about fluoridation.
Society for Fluoride Research. Online source of
articles on the effects of fluoride compounds.
it ought to be two strikes and you’re out. One
writer's view on a proposal to add fluoride to all drinking water
Voters may get teeth into fluoride issue. Should
the City of Toronto have put a question on the 2000 municipal
election ballot asking residents if they want to continue adding
fluoride to their drinking water? One reporter's findings.
Government Research Shows Fluoridation Creates More Harm Than
Good. A New York perspective.
Finds Correlation Between Fluorides In Water And Lead Levels. Is
lead poisoning linked to fluoridation?