chemistry 221professor of chemistry mt. hood community college chemistry 221 how to contact me:...
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Michael A. Russell, Ph.D.Professor of ChemistryMt. Hood Community College
Chemistry 221
How To Contact Me: (listed on syllabus)! phone: (503) 491-7348! email: [email protected]! web: http://mhchem.org/221! office: AC 2568! office hours: MWF 8-9 MW 10-11! Introduce Yourself! Let me know who you are!
Chemistry 221
http://twitter.com/mhchem http://facebook.com/mhchem
Why Take Chemistry? Versatile field - medicine, engineering, etc.Financially lucrative - "show me the money!"Understand your world - "Appearances can be deceiving"
"Powers of Ten"
What's This Class Like? Lectures - MWF 9 AM AC 1303
Seven chapters covered this term
Get The Chemistry 221 Companion from MHCC Bookstore, iClicker 2?
Sick? Section H1 or H2? Use Chapter Guides, podcasts, Handouts, Videos, etc. to learn material
What's This Class Like? Recitation - Assignments
First 90 to 120 minutes of "lab", turn in labs and practice problems Problem Sets - six problem sets, use "check" system for grading, don’t be late! Quizzes - no make up quizzes, drop lowest of 6 quizzes Exams - two midterms, need scantrons No cell phones as calculators!!! Sick? Must call day of lab, and must complete and turn in lab within one week
What's This Class Like? Laboratory Period
Need CH 221 Companion and bound lab notebook Notebook: Have me initial before leaving lab; notebook reviewed for completeness by me at end of term Lab reports: due the following week in recitation; most must be typed to avoid point penalty. No email submissions of labs. Late labs: up to one week, then zero Turn in all 9 labs, receive Lab Completion Bonus (20 pts) at end of term Format of lab:
Key Items:TitleYour NamePartner(s) name(s)PurposeData / ResultsConclusionPostlab questions
No procedure required
Use individual flair
Ask me to preview during first week
Labs must be printed (no electronic versions accepted)
Identification of an Unknown Metal Mass
Michael A. Russell Lab partner: Joyce Sherpa
September 29, 2013
Purpose: We wish to identify the unknown mass value (in grams) for unknown metal sample X. We will perform multiple measurements on unknown sample X in order to determine its correct value with high precision. Data / Observations: Unknown metal: X
trial #1: 32.334 g trial #2: 32.332 g trial #3: 32.321 g
average mass: 32.329 g average deviation: 0.005 parts per thousand: 0.15
Conclusion: We successfully determined the mass of unknown metal X to be 32.329 g. Our measurements included a high level of precision due to our parts per thousand value of 0.15. Post-Lab Questions: 1. Objects that are dipped in water will have an increase in their recorded mass. 2. An analytical scale will record masses with a greater precision than a top loading balance. 3. To find the mass of the object, subtract the empty beaker mass first. 114.131 g – 32.363 g = 81.768 g
The Web Site
Access in libraries, coffee shops, at MHCC, wherever Resources: Answers to quizzes, Web Lectures, Chemistry Links, Handouts, Labs, Announcements, extra credit, syllabus, Web Quests, much more - Explore! Grades posted after second week (use ID number)
http://mhchem.org/221
I Need Help!Tutoring center (LSC) above
library, also now online Office Hours (MWF 8-9 &
MW 10-11) Email [email protected] Phone messages Post questions to mhchem Talk to me if feeling stressed!
This Week's Assignments"Chemistry & The Internet" and
"Identification of an Unknown Compound" Labs
Introduction to Internet and the CH 221 WebsiteIntroduction to chemical ! investigation and lab
Keep notes in bound lab notebook; ! notebook will be turned in at end ! of term. Get notebook signature
from me before leaving lab. Know your lab partner(s)!
Next Week's AssignmentsTurn in "Chemistry & The Internet" handoutTurn in "Identification of an Unknown" LabTurn in Problem Set #1 (also: Practice Problem Set #1)Take Quiz #1Prepare for "Density" LabSee "What's Due This Week" !! Handout on Syllabus
How to Do Well in ChemistryCommit the Time - two hours of study per lecture hour, one hour per lab hourTake notes - how and what is up to you, but writing increases memory retentionUse the Textbook, website, etc. - review before class, practice many problems, study summariesYou CAN pass this class, and I will help you in any way possible!...and always... if questions, ASK ME!