For inexpensive chemistry labs to expand your repertoire, buy my lab book Chemistry on a Budget for $21 at amazon.com or $23 at lulu.com.
There are two versions of each lab, one with a ten-question conclusion and one with directions for a full lab report. This way the teacher has the option! Each lab is two pages to allow for one two-sided handout.
It will take a week or so to get to you, so Order Now!
*Some of you have purchased my lab book – be sure to check out Page 141 !
In a previous blog post dated 03/16/2014 titled “Dipole-dipole forces, etc.”, special properties of water are detailed and its importance to life on this planet.
Even though water covers 2/3 of our planet, less than 1% is potable – most of the developed world treats its water to keep this precious resource available.
Here is one article detailing the water treatment process:
Here is a 7-minute video describing water treatment in Kingsport, Tennessee:
Here is another video that is 26 minutes long that provides an in-depth tour of a facility in Grand Island, Nebraska:
“The Saint Lawrence River flows in a roughly north-easterly direction, connecting the Great Lakes with the Atlantic Ocean and forming the primary drainage outflow of the Great Lakes Basin. It traverses the Canadian provinces of Quebec and Ontario, and is part of the international boundary between Ontario, Canada, and the U.S. state of New York. This river also provides the basis of the commercial Saint Lawrence Seaway.”
“Montreal is [currently] dumping…untreated sewage into the St. Lawrence river because intercepting infrastructure that feeds sewage to a treatment facility needs to be repaired. Workers will inspect and clean various sections of the interceptor and they can’t do that while it’s still functioning.”
“Many North Country [northern New York] residents are upset after hearing about Montreal's plan to dump billions of liters of raw sewage into the St. Lawrence River.
“Montréal is forced to make a very difficult and unpopular decision... “They are attempting to do preventive maintenance to the system to avoid a larger disaster,” said Sarah Dorner, Associate Professor in the Department of Civil, Geological and Mining Engineering and NSERC Industrial Chair in Drinking Water Treatment, at the Polytechnique Montréal. ...
[According to Dorner], “If a blockage were to happen, you would end up with a continuous discharge into the river, and possibly even pump failure…We are talking about six cubic metres of raw sewage per second; and if you have pump failure, you can’t just replace it over night,” she said.
Dorner explains that the proposed discharge to empty the pump will clearly have an impact, but when you compare that with what is currently already being discharged every minute of the day from the city, the human health risk is minimal. “
“There is ‘little likelihood’ Montreal's plan to dump eight billion litres of raw sewage into the St. Lawrence River will have an effect on fish reproduction if it's done before the winter months and monitored properly, [according to] officials with Environment Canada…”
This current event is a potential topic for Extra Credit research or class discussion. It’s also interesting is that it’s an issue for Canada that affects the United States.
This Blog contains several entries that would be helpful to your chemistry classroom. Remember, you can check out the Topic List to help you to find past Blog entries.
The lab book Chemistry on a Budget is very useful to your Chemistry classroom with labs and class article ideas.
Also, Write To Me about your successes, challenges, or questions in the Chemistry Classroom.
Have a good weekend!