CHEM 123General Chemistry 2
- Units
- 0.50
- Faculty
- Science
- Subject
- Chemistry
When it runs
- F24
- W25
- S25
- F25
- W26
- S26
- F26
- W27
- S27
Ran in 5 of the last 7 terms. Winter 2027: scheduled, 5 lecture sections. Spring 2027: schedule not out yet.
Properties of liquids and solutions. Introduction to chemical equilibria. Principles of acid-base equilibria, solubility and electrochemical processes. Chemical kinetics.
Prerequisites
Antirequisites
- Not completed nor concurrently enrolled in any of the following:
- CHEM125 - Chemical Reactions, Equilibria and Kinetics (0.50)
Leads to
Winter 2027 sections
| Section | Class | Enrolled | Meets |
|---|---|---|---|
| LEC 001 | 6669 | 0 / 446 | MWF 09:30–10:20 |
| LEC 002 | 6670 | 0 / 446 | MWF 10:30–11:20 |
| LEC 003 | 6886 | 91 / 446 | MWF 11:30–12:20 |
| LEC 004 | 7677 | 0 / 150 | MWF 12:30–13:20 |
| LEC 701 | 2486 | 1292 / 9999 | Online or by arrangement |
| WSP 101 | 7728 | 91 / 372 | Jan 12 17:30–18:50 Jan 26 17:30–18:50 Feb 9 17:30–18:50 Mar 2 17:30–18:50 Mar 16 17:30–18:50 Mar 30 17:30–18:50 |
| WSP 102 | 7729 | 0 / 372 | Jan 19 17:30–18:50 Feb 2 17:30–18:50 Feb 23 17:30–18:50 Mar 9 17:30–18:50 Mar 23 17:30–18:50 Apr 6 17:30–18:50 |
| WSP 103 | 7730 | 0 / 372 | Jan 14 17:30–18:50 Jan 28 17:30–18:50 Feb 11 17:30–18:50 Mar 4 17:30–18:50 Mar 18 17:30–18:50 Apr 1 17:30–18:50 |
| WSP 104 | 7731 | 0 / 372 | Jan 21 17:30–18:50 Feb 4 17:30–18:50 Feb 25 17:30–18:50 Mar 11 17:30–18:50 Mar 25 17:30–18:50 Apr 8 17:30–18:50 |
Reviewed on UW Flow
57% liked it56% easy81% useful
From 593 ratings and 108 comments on UW Flow. The most helpful comments, quoted as written, without names. Read them all on UW Flow.
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Apr 2025 · didn’t like it · 3 found this helpfulOn UW FlowRemove this
so much worse than chem 120. got dunked on so hard on the midterms and finals despite studying so hard for them. just accept the low mark and move on. same mark breakdown and structure of teaching as chem 120 except they didnt curve any of the midterms nor shift all the weight of ur worst midterm to ur final. also imo profs kinda got lazy with actually explaining concepts and didnt answer a lot of questions on piazza.
Apr 2023 · didn’t like it · 3 found this helpfulOn UW FlowRemove this
this was so hard. PAY attention. this will not be like chem120 at all. it's hard so brace yourself and priortize the course.
Dec 2024 · didn’t like it · 2 found this helpfulOn UW FlowRemove this
Overall, this was an interesting course! The material was relatively easy for the first two mid-terms, however, it became much more challenging and difficult towards the end. The mid-term exams were very fair and the sample exams were very representative of the mid-terms themselves. The final exam was more challenging, however, the sample exam was still representative of the final exam. It is definitely possible to achieve a good mark in this course - you just need to work for it.
Apr 2017 · liked it · 2 found this helpfulOn UW FlowRemove this
This course was AWFUL. Dr. Ingram was a decent professor, she was always enthusiastic about what she was teaching, but sometimes she would move too fast on concepts people found unclear. This course is super content-heavy and moves very quickly. To be honest I dont even understand why this course is required for my degree, I never plan on taking another chem course after this one. I did fine on the first 2 tests, the second one was definitely easier. The exam absolutely KILLED me. I studied for 8 hours each day for 3 or 4 days leading up to the exam, felt super confident before writing it, and still think I bombed it. Dr. Ingram claimed that nothing on any of the tests or exam should be new…
Apr 2025 · didn’t like it · 1 found this helpfulOn UW FlowRemove this
Discussed on r/uwaterloo
480 posts and comments in 342 threads mention CHEM 123, October 2011 to December 2024. Quoted word for word, newest first; each reply sits under the post and the comment that started its branch. Search r/uwaterloo for newer posts.
Fall 2024
chem 123 tutorials?? 2 points, 4 comments
u/lunizaaa: “does anyone know if chen 123 tutorials are mandatory? in chem 120 i know they were just study halls, but i heard that they are now mandatory. don’t know if thats true”
u/potatoesmixedwithidk: “not mandatory when i took in w24!”
u/CreativeCopy7715: “How is chem 123? Is it hard? I have it winter 2025 and wanted to start preparing from now cuz 120 was awful😭”
CHEM 123 - Fall Term 1 point, 2 comments
Chem 123 question 1 point, 1 comment
u/mrboyo23: “I'm making my schedule for the next term, and I was wondering if the CHEM 123 tutorials are where the tests are going to be held. The reason why is because I have some scheduling conflicts and I don't know whether or not my tests are going to conflict. …”
Chem120 Midterm 1 point, 7 comments
“So i failed both of the midterms which were weighted 20% each. Do you know any one that happens to be an upper year who failed 2 midterms but miraculously passed the course? …”
u/voxaun: “i passed but i got 53. retook the course and got 85”
u/voxaun: “tbh i would WD if i were you T\T it's better to retake it & know the concepts so you can succeed in chem 123 and chem 266. i failed one midterm & i did poorly on the exam”
Can engineering students use IB transfer credits in upper year electives from a different faculty? 2 points, 3 comments
u/SharpDood: “… For example, if I take CHEM123 as a natural science elective, which is allowed as a transfer for HL Chem, do eng students also have the ability to get a transfer credit or no?”
Spring 2024
chem 266 1 point, 5 comments
u/voxaun: “i'm super anxious about chem 266 this fall, and i want to prepare for it during the remainder of august. i nearly failed chem 120, but i did much better in chem 123. what are important concepts to review for chem 266? i've taken a look at the course outline but i'm unsure.”
chem 264 or 266 1 point, 1 comment
“i'm planning out my courses until my last year (im currently about to start 2A), and i intend to aim for US medical schools. organic chem is a required prereq, but im not sure which one to choose??? …”
u/Dimtar_: “you can’t take 264 without having taken chem 123/125 which are the chemistry courses for chemistry majors you also said you’re not a science student, so keep in mind you also need to take chem 120/123 in first year to take 266”
Need a non-math elective, is Psych101 a decent course? 2 points, 6 comments
“I'm quite interested in this elective, but also want to make sure it's not too difficult. I heard it involves a lot of science. I didn't take any BIO class in high school. Is this worth a try?”
u/ConsequenceNo3618: “https://outline.uwaterloo.ca/view/nnmqtv Looks like no exams, but the weekly quizzes might be tedious Based on the topics, it doesn't seem to be too difficult. …”
u/_Space_Core_: “Psych 101 is really only hard if you don't like psychology, it's a higher course workload than all the 200 level psych courses, but easier than ochem or Chem 121/123”
life sci first year workload 1 point, 5 comments
“\title Also, how are the labs for first year and what profs would you guys recommend?”
u/smol_pumpkinnn: “… Laura Ingram is great for CHEM 120/121 and 123/125. …”
How Can I Prepare for competitive majors when I got accepted to a mid program undergrad 1 point, 6 comments
“If I were to get accepted into something like recreational leisures in waterloo, what should I do to major in other competitive majors like engineering or maybe even psychology. …”
u/B005hra: “… 127 and Math 128 2 Biology courses (Bio 130 is mandatory) 2 Chemistry courses (chem 120 and chem 123) 1 elective 1 English/Communication course With that being said you need a minimum average of 60% in all Science courses, 60% overall, and 75% in Psychology courses. …”
Winter 2024
Failed Chem 123 4 points, 1 comment
u/amazeryoyo: “dw! a lot of people take chem 123 in the spring term. good luck :)”
Chem 123 Exam 4 points, 9 comments
u/Speedingtiger: “As we approach finals I think it’s only granted that the annual how’s x exam like post should be made. Anyone who’s taken chem 123 in the past how was the final exam? I’m sort of in a very tight spot and need to do really well on the final”
Check it elsewhere for Fall 2026
- Undergraduate Calendar, 2026–27The official entry
- Requirements for Fall 2026Waterloo’s requisite checker
- Schedule of Classes, Fall 2026Instructors, rooms, live seats
- Quest Class SearchWhere you enrol
- Course outlinesSyllabi from past terms (UW login)
- UW FlowStudent ratings and reviews
- WClassesPast sections back to 2004, and who taught them