CHEM 120 A: Principles of Chemistry I

Autumn 2025
Meeting:
MTWTh 8:30am - 9:20am
SLN:
12297
Section Type:
Lecture
Instructor:
CHEM PLACEMENT IS TEST REQUIRED TO REGISTER FOR CHEM 110, CHEM 120, CHEM 142 OR CHEM 143. VISIT CHEM.WASHINGTON.EDU/PLACEMENT. ALLOW 2-3 BUSINESS DAYS TO ENROLL AFTER TAKING PLACEMENT TEST. EMAIL CHEMUGS@UW.EDU FOR HELP. --------------------------- NO OVERLOADS/WAITLISTS FOR CHEM LABS. VISIT NOTIFY.UW.EDU OR MYPLAN FOR AVAILABILITY ALERTS.
Syllabus Description (from Canvas):

Canvas Course Home Page

"If you never guess wrong, you're not guessing about hard enough things."

Jordan Ellenberg, Shape, 2021 (p. 418)


Course Meetings

Lecture

M, Tu, W, Th 8:30am - 9:30am in BAG 131

Lectures are recorded via Panopto and available via live stream. Synchronous PollEverywhere participation is expected throughout the quarter.

Discussion (Quiz) Sections

Fridays (times and locations per the UW Time Schedule)

In-person participation in your registered section is expected. You are allowed to miss two discussion sections without penalty. If you need to miss a discussion section for any reason, please follow guidance on the Absences and Late Work page.

Laboratory

Tuesdays or Wednesdays (times and locations per the UW Time Schedule)

In-person participation in your registered section is required. If you need to miss a lab session for any reason, please follow guidance on the Absences and Late Work page.


Teaching Team

See the Course Communication, Contact Information, and Office Hours in Canvas for more information.

Instructor

Samantha Connelly Robinson (she/her)

associate teaching professor 

sjconnel@uw.edu

Teaching Assistants

Erin Dunnington - Sections AA, AH, Lead TA

Chris Weir - Sections AB, AI

Soojin Hwang - Sections AC, AE

Qiwei Yin - Sections AD, AK

Yangyang Lyu - Sections AF, AG

Nova Zhang - Sections AJ, AL


Course Materials

Please see the Textbook and Online Homework Information page in Canvas for more information about how to access and purchase these items.

Textbook

General, Organic, and Biological Chemistry, 7th Ed. (Publisher: Cengage; Author: Stephen Stoker)

Online Homework

Achieve (Publisher: Macmillan)

Lab Gear

Lab coat, goggles, and duplicate-copy notebook


Learning Objectives

Get a complete list of objectives and skills by unit on the Course Learning Objectives page. These can be used as exam topic lists.

Unit 1: Chemical Compounds and Quantities

  • A: Use chemistry vocabulary to describe and classify substances and processes.
  • B: Use measurements and dimensional analysis to interpret chemical quantities.
  • C: Describe and quantify the components and structure of each atom.
  • D: Identify the chemical make-up of a substance from the chemical formula and translate between chemical formulas, names, and 3D structures of compounds and molecules.

Unit 2: Stoichiometry, Chemical Reactions, and Physical Changes

  • E: Compare and convert between chemical quantities in the context of a chemical reaction.
  • F: Describe and compare the physical properties and behavior of substances in different states of matter, including gas laws, phase changes, and intermolecular forces.
  • G: Predict and quantify the behavior of solutes in solution by applying principles of solubility, concentration, chemical reactions, and colligative properties.

Unit 3: Chemical Changes

  • H: Analyze chemical reaction equation to classify reaction types, evaluate energy changes, and predict reaction behavior using principles of kinetics, thermodynamics, and equilibrium.
  • I: Analyze and quantify acid-base behavior in aqueous solutions using chemical definitions, equilibrium constants, and reaction stoichiometry to predict pH, buffer capacity, and neutralization outcomes.

Broad Laboratory Goals:

  • Use lab experiments to solidify understanding of lecture topics and content
  • Develop data presentation and scientific writing skills
  • Become familiar with a variety of laboratory techniques

Course Components and Grading

This course is comprised of exams, lab assignments, online homework, and various participation assignments as outlined below. Find more specifics on the Grading System page in Canvas.

  • 40% - 2 midterm exams @ 18% each
  • 30% - 1 cumulative final exam 
  • 15% - Laboratory Assignments
  • 9% - Online Homework (Achieve)
  • 6% - Participation Assignments (Active Reading, PollEv, etc.)

 


Additional Resources in Canvas

Course Structure

Policy Pages

Catalog Description:
First course in a three-quarter overview of general chemistry, organic chemistry, and biochemistry. Not for students majoring in biochemistry, chemistry, or engineering. Includes matter and energy, chemical nomenclature, chemical reactions, stoichiometry, modern atomic theory, chemical bonding. Laboratory. Maximum 6 credits allowed between CHEM 120; CHEM 142; CHEM 143; CHEM 145; B CHEM 115; B CHEM 143; and B CHEM 144. Course equivalent to: B CHEM 115. Course overlaps with: CHEM 142; CHEM 143; and CHEM 145. Prerequisite: assessment of skills by taking General Chemistry Placement Exam. Offered: AS.
GE Requirements Met:
Natural Sciences (NSc)
Quantitative and Symbolic Reasoning (QSR)
Credits:
5.0
Status:
Active
Last updated:
January 8, 2026 - 4:26 pm