Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.
-
Upload
charlotte-lawson -
Category
Documents
-
view
218 -
download
2
Transcript of Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.
![Page 1: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/1.jpg)
Teaching First Year ChemistryDr. Kim Bolton, School of Environmental Sciences
![Page 2: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/2.jpg)
Soil and Water Chemist
My First Year Experience Environmental Chemistry I and II
Equivalent to standard two term 1st year chemistry course Environmental chemistry examples (acid rain, ozone depletion,
photochemical smog, etc.) Lectures/labs Course no longer exists
My Background
![Page 3: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/3.jpg)
My First Year Experience Introductory Chemistry
Equivalent to grade 12 chemistry Distance education format No labs
Chemistry Today Chemistry for non-science students (Hotel and Food Administration) No labs
My Background
![Page 4: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/4.jpg)
Text: Introduction to Environmental Chemistry, Nigel Bunce Objectives
Introduction to chemical principles which govern chemical reactions in the environment
Introduction to some specific problems in environmental chemistry
Environmental Chemistry I and II
Part I Part II
Stoichiometry Acids and Bases
Energetics in Chemical Reactions: Enthalpy
Solubility Equilibria
Gases and the Atmosphere Acid Rain
Kinetics Energetics in Chemical Reactions: Free Energy
Gaseous Equilibria Stratospheric Ozone Depletion
Water Electrochemistry
Metals and Mining
![Page 5: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/5.jpg)
Ways to engage students Use of quantitative environmental examples:
Stoichiometry; eg) Calculate the maximum yield of sulphuric acid produced from 125 tonnes of pyrite.
Thermochemistry; eg) Calculate the mass of methane that must be burned to heat a typical house in S. Ontario on a winter day when the total heat requirement is 6.7 x 105 kJ
Photochemistry; eg) The C-Cl bond has bond dissociation energy 330 kJ mol-1, while CFCl3 absorbs radiation having λ < 220 nm. Will CFCl3 undergo bond cleavage in the lower atmosphere?
Environmental Chemistry I and II
![Page 6: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/6.jpg)
Ways to engage students Use of quantitative environmental examples:
Kinetics; eg) The degradation of the pesticide fenvalerate in the envionment is found to be first order with k = 3.9 x 10-7 s-1. An accidental discharge of 100 kg of fenvalerate into a holding pond results in a fenvalerate concentration of 1.3 x 10-5 mol L-1. Calculate the concentration left after one month. How long before the fenvalerate concentration in the pond reaches 1 μM?
Free Energy; eg) Calculate the equilibrium constant for3/2 O2(g) ↔ O3(g)
and estimate O3 content in stratosphere. (then compare to actual content).
Environmental Chemistry I and II
![Page 7: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/7.jpg)
Ways to engage students Specific Environmental Topics:
Greenhouse Gases and Climate Change Photochemical Smog and Ground Level Ozone Water Hardness and Water Softening
Laboratory; water hardness by titration with standard EDTA Biological Oxygen Demand (sewage and industrial waste water) Phosphate removal from sewage Acid Mine Drainage
“Stories” Solubility; eg) Why do walls of the Welland Canal crumble?
(CaSO4•H2O solubility) Metal toxicity; Copper complexation story
Environmental Chemistry I and II
![Page 8: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/8.jpg)
Text: Chemistry in Focus, Nivaldo Tro (Brooks/Cole) First half of course addresses general chemistry principles:
Atoms and Elements Compounds and Chemical Reactions (a little stoichiometry) Chemical Bonding (Lewis structures) Organic Chemistry Acids and Bases
Second half examine some applications: Household Chemicals Biochemistry and Pharmaceuticals Chemistry of Food Chemistry of the Environment
Chemistry Today
![Page 9: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/9.jpg)
Way to engage students Group Project - groups assigned "mystery ingredient list“ Required to produce report
should be informative and should be written for the general public for a popular science or health magazine.
Chemistry Today
![Page 10: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/10.jpg)
Chemistry Today
![Page 11: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/11.jpg)
Both Distance Education Courses Way to engage students
OWL Homework (Cengage)
Introductory Chemistry and Chemistry Today
![Page 12: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/12.jpg)
![Page 13: Teaching First Year Chemistry Dr. Kim Bolton, School of Environmental Sciences.](https://reader036.fdocuments.in/reader036/viewer/2022062407/56649e445503460f94b3808f/html5/thumbnails/13.jpg)
Student preparation quite variable Strengths
Confidence Willingness to ask for help
Weaknesses Math!! (basic algebra; dimensional analysis) Problem solving skills Fear (and loathing) of chemistry General 1st year issues
Maturity Time management
1st year students