the following are the assignment for 11/21/07:
Regent Chemistry 1: HW #25 (Due Monday 11/26/07):
Holt - Read pp. 190-198, Do p. 198 Problems #4, 14 and p. 207 Problems #8, 9, 10.
Living Environment 1: HW #22 (Due Monday 11/26/07):
Black Friday Shoppers: Here is a little something to keep you scientific side of the brain remain engaged after all those turkey: For your new (or old) purchases, I would like you to make up a table and fill in the information requested (2 or 3 purchases):
If you have a scale, measure the mass. If you don't have the scale, use a ruler and measure the size of the object and of the packaging and record the data.
• If you were absent today, we had also assigned a group project which is due on 12/3/07. The exact detail is as below:
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Student Report: Understand the Importance of Recycling
Goal: To understand the impact of our consumer-based economy on our environment.
Report Format: This report should be typed (double-spaced) and about 2~4 pages in length. If possible, I would also like an electronic version of your report (either send it to me by e-mail as attachment (drliu.iths@gmail.com), or bring it on a flash drive so you can download the data onto the class computer.
Due Date: December 3rd, 2007. This report will be counted as a project for the term.
Major sections of the report:
1. Each student will select an object to be analyzed for this project. For example, a student may select common household object like a traditional TV, an office desk, a bed, or a bike. Don’t select something too simple (boring!), be different and creative! Include a picture of your selected object for the report.
2. Breaking down the object into components: You don’t really physically break apart your object, but just observe the object carefully and do some research to find out what the object is really made of. Make a list of each individual component that makes up the object.
3. Divide all the components into major categories of materials. Some major categories to be considered are: Metals, Plastics, Ceramics, Glass, Woods, Chemicals, or Natural Organic matters. (Include other major categories as you see fit). Draw a table to organize your information.
4. For each major categories, trace where your specific materials come from originally, how did it get processed into the object that you see, and what will happen to those specific materials after the object is no longer being used. Specifically, after the object becomes wastes, does it go to a landfill, an incinerator, or recycling facility? Present the trace of each category of your materials in a form that is easy to understand.
5. For each category of materials, answer the following questions:
a) Are the materials for the components made from renewable or nonrenewable resources? Explain your reasoning.
b) Can we reuse the components readily in different applications?
c) Can we recycle the materials that made up these components? How can we do that?
d) If these materials cannot be reused or recycled, is there a way of reducing the usage of this materials so we don’t impact our environment too much?
Some answers to these question may not be so obvious and requires a little research and creative thinking. Show your ingenuity and use those brain cells!
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Happy Thanksgiving!
Dr. Liu
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