Stanford Root

Schedule

Stanford Root

Schedule

CHEM 31A

Chemical Principles I

UNITS:5
GRADING:Letter or Credit/No Credit
LEVEL:Undergrad
GER:WAY-SMA

CHEM 31A is the first half of a two-part course designed to provide a robust foundation in key chemical principles for students with a background in high school chemistry (non-AP/IB), who have already placed into Math CHEM 19 or higher. The course engages students in group problem-solving activities throughout class periods to deepen their ability to analyze and solve chemical problems. Students will also participate in a weekly laboratory activity that will provide hands-on practice and applications of chemical phenomena discussed in lecture. Students entering the course are expected to be able to balance chemical equations, calculate empirical formulas, and use stoichiometry to determine the limiting reagent. Students will explore chemical principles that allow them to analyze the carbon efficiency of fossil fuels by applying their knowledge of stoichiometry and energetics, apply multiple structural models to describe interactions critical for biomolecules such as DNA, and use gas laws to determine the pressure exerted on a deep-sea diver or how to put out a forest fire at high altitude. Prerequisites: Math CHEM 18 (or placement beyond), and Chem11 or placement into Chem31A with Autumn General Chemistry Placement test. All students who are interested in taking general chemistry at Stanford must take the General Chemistry Placement Test before the Autumn quarter begins, regardless of chemistry background, to enroll. See the following website for more information on course placement: https://chemistry.stanford.edu/academics/undergraduate-program/how-choose-your-first-class

Syllabus for selected term:
View Autumn 2026 Syllabus

Sections

1 Term
Lecture 1Open
ID: 6650
0 / 155 enrolled
Meeting 1 of 2
DAYS:Monday, Wednesday, Friday
TIME:10:30 AM – 11:20 AM
LOCATION:STLC 114
INSTRUCTOR:
Schwartz Poehlmann, Jennifer, Liu, Xinyu
Meeting 2 of 2
DAYS:Wednesday
TIME:5:30 PM – 6:50 PM
LOCATION:STLC 114
INSTRUCTOR:
Schwartz Poehlmann, Jennifer, Liu, Xinyu
5units
Lecture 2Open
ID: 6651
0 / 155 enrolled
Meeting 1 of 2
DAYS:Wednesday
TIME:5:30 PM – 6:50 PM
LOCATION:Departmental Room
INSTRUCTOR:
Schwartz Poehlmann, Jennifer, Liu, Xinyu
Meeting 2 of 2
DAYS:Monday, Wednesday, Friday
TIME:12:30 PM – 1:20 PM
LOCATION:STLC 114
INSTRUCTOR:
Schwartz Poehlmann, Jennifer, Liu, Xinyu
5units
Lab Section 1Open
ID: 6652
0 / 21 enrolled
DAYS:Tuesday
TIME:8:30 AM – 10:20 AM
LOCATION:SAPP 201
5units
Lab Section 2Open
ID: 6653
0 / 21 enrolled
DAYS:Tuesday
TIME:8:30 AM – 10:20 AM
LOCATION:SAPP 208
5units
Lab Section 3Open
ID: 7516
0 / 21 enrolled
DAYS:Tuesday
TIME:8:30 AM – 10:20 AM
LOCATION:SAPP 215
5units
Lab Section 4Open
ID: 6654
0 / 21 enrolled
DAYS:Tuesday
TIME:10:30 AM – 12:20 PM
LOCATION:SAPP 201
5units
Lab Section 5Open
ID: 6655
0 / 21 enrolled
DAYS:Tuesday
TIME:10:30 AM – 12:20 PM
LOCATION:SAPP 208
5units
Lab Section 6Open
ID: 6656
0 / 21 enrolled
DAYS:Tuesday
TIME:10:30 AM – 12:20 PM
LOCATION:SAPP 215
5units
Lab Section 7Open
ID: 6657
0 / 21 enrolled
DAYS:Tuesday
TIME:1:30 PM – 3:20 PM
LOCATION:SAPP 201
5units
Lab Section 8Open
ID: 6658
0 / 21 enrolled
DAYS:Tuesday
TIME:1:30 PM – 3:20 PM
LOCATION:SAPP 208
5units
Lab Section 9Open
ID: 6659
0 / 21 enrolled
DAYS:Tuesday
TIME:1:30 PM – 3:20 PM
LOCATION:SAPP 215
5units
Lab Section 10Open
ID: 6660
0 / 21 enrolled
DAYS:Tuesday
TIME:3:30 PM – 5:20 PM
LOCATION:SAPP 201
5units
Lab Section 11Open
ID: 6661
0 / 21 enrolled
DAYS:Tuesday
TIME:3:30 PM – 5:20 PM
LOCATION:SAPP 208
5units
Lab Section 12Open
ID: 6662
0 / 21 enrolled
DAYS:Tuesday
TIME:3:30 PM – 5:20 PM
LOCATION:SAPP 215
5units
Lab Section 13Open
ID: 6663
0 / 21 enrolled
DAYS:Monday
TIME:1:30 PM – 3:20 PM
LOCATION:SAPP 201
5units
Lab Section 14Open
ID: 6664
0 / 21 enrolled
DAYS:Monday
TIME:1:30 PM – 3:20 PM
LOCATION:SAPP 208
5units
Lab Section 15Closed
ID: 6665
DAYS:Monday
TIME:1:30 PM – 3:20 PM
LOCATION:SAPP 215
5units
Lab Section 16Open
ID: 6667
0 / 21 enrolled
DAYS:Monday
TIME:3:30 PM – 5:20 PM
LOCATION:SAPP 201
5units
Lab Section 17Closed
ID: 6668
DAYS:Monday
TIME:3:30 PM – 5:20 PM
LOCATION:SAPP 208
5units
Lab Section 18Closed
ID: 6670
DAYS:Monday
TIME:3:30 PM – 5:20 PM
LOCATION:SAPP 215
5units
Lab Section 19Closed
ID: 6671
DAYS:Wednesday
TIME:8:30 AM – 10:20 AM
LOCATION:SAPP 201
5units
Lab Section 20Closed
ID: 6673
DAYS:Wednesday
TIME:8:30 AM – 10:20 AM
LOCATION:SAPP 208
5units
Lab Section 21Closed
ID: 6674
DAYS:Wednesday
TIME:8:30 AM – 10:20 AM
LOCATION:SAPP 215
5units

CHEM 31A: Chemical Principles I

5 units · Letter or Credit/No Credit · GER: WAY-SMA

31A is the first half of a two-part course designed to provide a robust foundation in key chemical principles for students with a background in high school chemistry (non-AP/IB), who have already placed into Math 19 or higher. The course engages students in group problem-solving activities throughout class periods to deepen their ability to analyze and solve chemical problems. Students will also participate in a weekly laboratory activity that will provide hands-on practice and applications of chemical phenomena discussed in lecture. Students entering the course are expected to be able to balance chemical equations, calculate empirical formulas, and use stoichiometry to determine the limiting reagent. Students will explore chemical principles that allow them to analyze the carbon efficiency of fossil fuels by applying their knowledge of stoichiometry and energetics, apply multiple structural models to describe interactions critical for biomolecules such as DNA, and use gas laws to determine the pressure exerted on a deep-sea diver or how to put out a forest fire at high altitude. Prerequisites: Math 18 (or placement beyond), and Chem11 or placement into Chem31A with Autumn General Chemistry Placement test. All students who are interested in taking general chemistry at Stanford must take the General Chemistry Placement Test before the Autumn quarter begins, regardless of chemistry background, to enroll. See the following website for more information on course placement: https://chemistry.stanford.edu/academics/undergraduate-program/how-choose-your-first-class

Offered in Autumn 2026 at Stanford University.

Autumn 2026 sections

  • Lab Section — Wednesday 8:30 AM – 10:20 AM — SAPP 201 (Undergrad)
  • Lab Section — Monday 3:30 PM – 5:20 PM — SAPP 215 (Undergrad)
  • Lab Section — Wednesday 8:30 AM – 10:20 AM — SAPP 208 (Undergrad)
  • Lab Section — Wednesday 8:30 AM – 10:20 AM — SAPP 215 (Undergrad)
  • Lab Section — Tuesday 10:30 AM – 12:20 PM — SAPP 215 (Undergrad)
  • Lab Section — Tuesday 10:30 AM – 12:20 PM — SAPP 208 (Undergrad)
  • Lab Section — Tuesday 10:30 AM – 12:20 PM — SAPP 201 (Undergrad)
  • Lab Section — Tuesday 8:30 AM – 10:20 AM — SAPP 208 (Undergrad)
  • Lab Section — Tuesday 3:30 PM – 5:20 PM — SAPP 201 (Undergrad)
  • Lab Section — Tuesday 1:30 PM – 3:20 PM — SAPP 215 (Undergrad)
  • Lab Section — Tuesday 1:30 PM – 3:20 PM — SAPP 208 (Undergrad)
  • Lab Section — Tuesday 1:30 PM – 3:20 PM — SAPP 201 (Undergrad)
  • Lab Section — Monday 1:30 PM – 3:20 PM — SAPP 208 (Undergrad)
  • Lab Section — Monday 1:30 PM – 3:20 PM — SAPP 201 (Undergrad)
  • Lab Section — Tuesday 3:30 PM – 5:20 PM — SAPP 215 (Undergrad)
  • Lab Section — Tuesday 3:30 PM – 5:20 PM — SAPP 208 (Undergrad)
  • Lab Section — Monday 3:30 PM – 5:20 PM — SAPP 208 (Undergrad)
  • Lab Section — Monday 3:30 PM – 5:20 PM — SAPP 201 (Undergrad)
  • Lab Section — Monday 1:30 PM – 3:20 PM — SAPP 215 (Undergrad)
  • Lab Section — Tuesday 8:30 AM – 10:20 AM — SAPP 201 (Undergrad)
  • Lab Section — Tuesday 8:30 AM – 10:20 AM — SAPP 215 (Undergrad)
  • Lecture — Monday Wednesday Friday 10:30 AM – 11:20 AM — STLC 114 — Schwartz Poehlmann, Jennifer, Liu, Xinyu (Undergrad)
  • Lecture — Wednesday 5:30 PM – 6:50 PM — Departmental Room — Schwartz Poehlmann, Jennifer, Liu, Xinyu (Undergrad)

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  • CHEM 31B: Chemical Principles II
  • CHEM 31E: Chemical Foundations and 21st Century Problems
  • CHEM 31S: STEMentors in Chemistry
  • CHEM 33: Structure and Reactivity of Carbon-Based Molecules
  • CHEM 90: Directed Instruction/Reading
  • CHEM 91: Exploring Chemical Research at Stanford
  • CHEM 93: Chemistry Unleashed: Exploring the Chemistry that Transforms Our World
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