CHEM 113A
Physical Chemistry: Introduction to Quantum Mechanics
Lecture and discussion.
Spring 2027: 1 lecture and 1 discussion. Nothing here is open. The oldest of these readings was about 1 month ago.
Grades
3.42
Average grade awarded in CHEM 113A. Not a student rating: this is what the grades were.
In the A range
59%
of the 344 letter grades
D, F or W
1.5%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
1%
3 of 3 students passed
The registrar's own records: 344 grades over 12 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.
What is inside that record
No summer session is in that record.
The table below splits them, and term averages across those 12 terms ran 3.07 to 3.72.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 64 · 18.6%
- A 92 · 26.7%
- A- 48 · 14.0%
- B+ 35 · 10.2%
- B 40 · 11.6%
- B- 20 · 5.8%
- C+ 18 · 5.2%
- C 15 · 4.4%
- C- 7 · 2.0%
- D 3 · 0.9%
- F 2 · 0.6%
- P 3 of 348
- I 1 of 348
Percentages are of the 344 letter grades. Grey bars are non-letter outcomes: passes (P) and incompletes (I).
How the non-letter outcomes are counted
They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.
By instructor
| Instructor | Predicted GPA | Raw | n | Terms | A range | Workload | Spring 2027 |
|---|---|---|---|---|---|---|---|
| WU, ERIC C reviews ↗ | 3.53 | 3.54 | 204 | 6 | 70% | very light | not teaching it |
| SHAFAAT, HANNAH reviews ↗ | 3.18 | 3.07 | 38 | 1 | 26% | - | not teaching it |
| CARAM, JUSTIN RYAN reviews ↗ | 3.38 | 3.36 | 28 | 1 | 46% | very heavy | not teaching it |
| NEUHAUSER, DANIEL reviews ↗ | 3.33 | 3.27 | 27 | 1 | 52% | average | not teaching it |
| BARR, KRISTOPHER KENT reviews ↗ | 3.32 | 3.25 | 24 | 2 | 50% | light | not teaching it |
| NARANG, PRINEHA reviews ↗ | 3.41 | 3.40 | 23 | 1 | 57% | - | not teaching it |
Why Predicted is not the Raw average
“Predicted” is shrunk toward the course average, which is itself shrunk toward the department, so an instructor with a handful of students sits near the course mean rather than topping the list.
Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.
Workload and assignments
Work types reported in BruinWalk reviews of this course, across recorded instructors and terms. They may differ from this term's syllabus.
dibs has not read this course’s reviews, so it cannot say what kind of work it sets. That is dibs not having looked. It is not a course without papers or exams, and the reviews linked below are the answer until dibs catches up.
What comes first
The chain dibs can see is 6 courses long before CHEM 113A. Read from Fall 2026, because dibs has not read a class page for CHEM 113A in Spring 2027 and a department can change what it requires. This is a floor, not a deadline: dibs has not read a class page for CHEM 20B, LIFESCI 30B, and MATH 3B, so the real chain can only be longer than this, never shorter.
Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.
In Springs
Ran in 4 of the last 4 Springs.
From the terms dibs holds, which start in Fall 2021 and exclude summer. A department can run a course in a quarter it never has before.
From the registrar's catalog
Lecture, three hours; discussion, one hour. Requisites: course 20B, Mathematics 32A, 32B, 33A, Physics 1A, 1B, and 1C, or 1AH, 1BH, and 1CH, or 5A, 5B, and 5C, or 6A, 6B, and 6C, with grades of C- or better. Departure from classical mechanics: Schrödinger versus Newton equations; model systems: particle-in-box, harmonic oscillator, rigid rotor, and hydrogen atom; approximation methods: perturbation and variational methods; many-electron atoms, spin, and Pauli principle, chemical bonding. P/NP or letter grading.
Sections in Spring 2027
You enroll in the discussion, not the lecture, so a discussion's status is the one that decides whether you get in. A lecture can read open while every discussion under it is full.
Seat counts as of : the oldest of these 2 readings. Seat readings are snapshots, not live availability. Their timestamps show when dibs last checked.
-
Lec 1 Time TBANot published yet
Not yet assigned
3.42predicted, all instructors · 344 gradesno enrollment count published no history
not checked yet1 discussion. The registrar has not published seat counts for them yet.
Every discussion, with its time and seats (1)
-
Dis 1A
Time TBA · Room not yet assigned
Not published yetno enrollment count published
-
Final enrollment, averaged across each term's sections: between 11 and 45 a term over 12 terms, summer excluded, most recently 23 in Fall 2025. That is the shape across years, not this term, which is above.
Seats over time in Spring 2027
Read once so far, so there is no line to draw yet.
What turns this into a chart
A second reading is what turns this into a chart: courses come round within about three hours, and a lecture somebody is watching goes to the front of the pass. Watching is on the lecture's own page, not this one.
How readings and alerts work
A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.
Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.
The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.
From the people who took it
Student reviews
What taking CHEM 113A was like: the work, the teaching, and what students wish they’d known.
Your experience could be the first.
No student reviews are available to read on dibs for this course yet. Took it? Tell the next person what helped, what was hard, and how you spent your time.
Looking for more perspectives?
External reviews are separate and do not count toward the dibs rating.