SCH3U Chemical Reactions Assignment
Name: ______Date: ______
TOTAL /35
Please answer the following questions as completely as possible. Please note the assignment of marks towards your grade in brackets.
1. Properly reference your work from today. If you’re not sure of how to do this, please visit the following website:
http://library.owu.edu/science/c360cite.html - the more useful information is near the bottom of the page.
Please avoid google and wikipedia. They are far from scientific and the information there offers no value. References or work from either of these two sites will be deemed incorrect.
Proper referencing format is worth 5 marks.
2. Base metal smelting produces useful metals such as zinc, lead, copper, and nickel directly from their ores. However, during smelting, harmful compounds can be released into the environment, including cadmium, arsenic, sulfur dioxide, and mercury, all of which can endanger the health and safety of local populations.
a) What are some of the chemical reactions used in the process of making paper? ( 2 marks)
b) How might the reactants or products of the pulp and paper production process affect the health of people l iving near the plant? ( 3 marks)
c) In what ways might the leaching of chemicals from tailing ponds affect the water quality in a local community?
( 2 marks)
d) In what ways do toxic chemical fires affect local communities? ( 2 marks)
3. Scrubber systems are a group of air pollution control devices used by industry to remove or neutralize acid exhaust gases before they reach the atmosphere. Scrubber technologies help to reduce acid precipitation, but there are many different scrubbing techniques with varying levels of effectiveness in controlling acid gas emissions.
a) How are chemical reactions used to remediate environments affected by chemical spills? (2 marks)
b) How can tailing ponds be rehabilitated to lessen the effects of hazardous chemicals on plant populations?
( 3 marks)
c) What types of chemical reactions can change a toxic chemical into one that is less toxic or non-toxic?
( 2 marks)
4. Check out the website : http://www.ic.gc.ca/eic/site/plastics-plastiques.nsf/eng/pl01384.html and take a look at the information included on the page.
a) what type of plastic resin is most commonly produced in Canada and what percentage of the total is it responsible for? ( 2 marks)
b) How many people are employed in this industry and what is their average annual salary? ( 2 marks)
c) Highlight three of the environmental impacts of this industry. ( 6 marks)
d) What type of reactions occur in this sector? ( 1 mark)
5. Find a chemical industry that uses one of the types of reactions that we’ve discussed in class. Without using google or wikipedia indicate how the chemical reaction is important for that chemical company and how it affects life in Canada as a whole. ( 5 marks)